diff --git a/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOpMarkedContent.java b/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOpMarkedContent.java
index ba1d08c2c..e0b3e0f89 100644
--- a/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOpMarkedContent.java
+++ b/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOpMarkedContent.java
@@ -90,17 +90,25 @@ public List<? extends Object> getLinkedObjects(String link) {
 		}
 	}
 
-    public List<CosName> getTag() {
-        if (this.arguments.size() > 1) {
-			COSBase name = this.arguments.get(this.arguments.size() - 2);
-			if (name.getType() == COSObjType.COS_NAME) {
-				List<CosName> list = new ArrayList<>(MAX_NUMBER_OF_ELEMENTS);
-				list.add(new GFCosName((COSName) name));
-				return Collections.unmodifiableList(list);
-			}
+    public List<CosName> getLinkTag() {
+		COSName tag = getTag();
+        if (tag != null) {
+			List<CosName> list = new ArrayList<>(MAX_NUMBER_OF_ELEMENTS);
+			list.add(new GFCosName(tag));
+			return Collections.unmodifiableList(list);
         }
         return Collections.emptyList();
     }
+	
+	public COSName getTag() {
+		if (this.arguments.size() > 1) {
+			COSBase name = this.arguments.get(this.arguments.size() - 2);
+			if (name.getType() == COSObjType.COS_NAME) {
+				return (COSName) name;
+			}
+		}
+		return null;
+	}
 
     protected List<CosDict> getPropertiesDict() {
 		if (this.propertiesDict != null) {
@@ -122,10 +130,10 @@ public List<CosLang> getLang() {
 	}
 
 	public String getParentsTags() {
-		List<CosName> tagList = getTag();
+		COSName tagName = getTag();
 		String tag = "";
-		if (tagList.size() != 0) {
-			tag = tagList.get(0).getinternalRepresentation();
+		if (tagName != null) {
+			tag = tagName.getString();
 		}
 		String parentsTags = "";
 		if (markedContent != null) {
@@ -241,13 +249,7 @@ public COSString getInheritedStringAttribute(ASAtom key) {
 		if (string != null) {
 			return string;
 		}
-		if (markedContent != null) {
-			string = markedContent.getInheritedStringAttribute(key);
-			if (string != null) {
-				return string;
-			}
-		}
-		return null;
+		return markedContent != null ? markedContent.getInheritedStringAttribute(key) : null;
 	}
 
 	public COSString getStringAttribute(ASAtom key) {
@@ -261,13 +263,7 @@ public Long getInheritedMCID() {
 		if (mcid != null) {
 			return mcid;
 		}
-		if (markedContent != null) {
-			mcid = markedContent.getInheritedMCID();
-			if (mcid != null) {
-				return mcid;
-			}
-		}
-		return null;
+		return markedContent != null ? markedContent.getInheritedMCID() : null;
 	}
 
 }
diff --git a/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_BDC.java b/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_BDC.java
index 08aef48af..6fa99151c 100644
--- a/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_BDC.java
+++ b/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_BDC.java
@@ -60,7 +60,7 @@ public List<? extends Object> getLinkedObjects(
 			String link) {
 		switch (link) {
 			case TAG:
-				return this.getTag();
+				return this.getLinkTag();
 			case PROPERTIES:
 				return this.getPropertiesDict();
 			case LANG:
diff --git a/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_BMC.java b/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_BMC.java
index 461a9992f..e543f8a6d 100644
--- a/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_BMC.java
+++ b/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_BMC.java
@@ -49,7 +49,7 @@ public GFOp_BMC(List<COSBase> arguments, GFOpMarkedContent markedContent, String
     public List<? extends Object> getLinkedObjects(String link) {
         switch (link) {
             case TAG:
-                return this.getTag();
+                return this.getLinkTag();
             case PROPERTIES:
                 return this.getPropertiesDict();
             default:
@@ -58,16 +58,14 @@ public List<? extends Object> getLinkedObjects(String link) {
     }
 
 	@Override
-	public List<CosName> getTag() {
-		if (!this.arguments.isEmpty()) {
-			COSBase name = this.arguments.get(this.arguments.size() - 1);
-			if (name.getType() == COSObjType.COS_NAME) {
-				List<CosName> list = new ArrayList<>(MAX_NUMBER_OF_ELEMENTS);
-				list.add(new GFCosName((COSName) name));
-				return Collections.unmodifiableList(list);
-			}
-		}
-		return Collections.emptyList();
-	}
+    public COSName getTag() {
+        if (!this.arguments.isEmpty()) {
+            COSBase name = this.arguments.get(this.arguments.size() - 1);
+            if (name.getType() == COSObjType.COS_NAME) {
+                return (COSName) name;
+            }
+        }
+        return null;
+    }
 
 }
diff --git a/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_DP.java b/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_DP.java
index 3a3bb4fe8..a6072a2e3 100644
--- a/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_DP.java
+++ b/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_DP.java
@@ -45,7 +45,7 @@ public List<? extends Object> getLinkedObjects(
 			String link) {
 		switch (link) {
 			case TAG:
-				return this.getTag();
+				return this.getLinkTag();
 			case PROPERTIES:
 				return this.getPropertiesDict();
 			default:
diff --git a/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_MP.java b/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_MP.java
index c6d3c84e8..8502c50d9 100644
--- a/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_MP.java
+++ b/validation-model/src/main/java/org/verapdf/gf/model/impl/operator/markedcontent/GFOp_MP.java
@@ -45,25 +45,21 @@ public GFOp_MP(List<COSBase> arguments) {
     }
 
     @Override
-    public List<? extends Object> getLinkedObjects(
-            String link) {
+    public List<? extends Object> getLinkedObjects(String link) {
         if (TAG.equals(link)) {
-            return this.getTag();
+            return this.getLinkTag();
         }
         return super.getLinkedObjects(link);
     }
 
-	@Override
-	public List<CosName> getTag() {
+	public COSName getTag() {
 		if (!this.arguments.isEmpty()) {
 			COSBase name = this.arguments.get(this.arguments.size() - 1);
 			if (name.getType() == COSObjType.COS_NAME) {
-				List<CosName> list = new ArrayList<>(MAX_NUMBER_OF_ELEMENTS);
-				list.add(new GFCosName((COSName) name));
-				return Collections.unmodifiableList(list);
+				return (COSName) name;
 			}
 		}
-		return Collections.emptyList();
+		return null;
 	}
 
 }
diff --git a/validation-model/src/main/java/org/verapdf/gf/model/impl/pd/gfse/contents/GFSEMarkedContent.java b/validation-model/src/main/java/org/verapdf/gf/model/impl/pd/gfse/contents/GFSEMarkedContent.java
index 69ba4bce8..42eb6db1c 100644
--- a/validation-model/src/main/java/org/verapdf/gf/model/impl/pd/gfse/contents/GFSEMarkedContent.java
+++ b/validation-model/src/main/java/org/verapdf/gf/model/impl/pd/gfse/contents/GFSEMarkedContent.java
@@ -21,6 +21,7 @@
 package org.verapdf.gf.model.impl.pd.gfse.contents;
 
 import org.verapdf.as.ASAtom;
+import org.verapdf.cos.COSName;
 import org.verapdf.cos.COSObject;
 import org.verapdf.cos.COSString;
 import org.verapdf.gf.model.impl.operator.inlineimage.GFOp_EI;
@@ -140,11 +141,8 @@ public String getExtraContext() {
 
     @Override
     public String gettag() {
-        List<CosName> tag = operator.getTag();
-        if (tag != null && tag.size() != 0) {
-            return tag.get(0).getinternalRepresentation();
-        }
-        return null;
+        COSName tag = operator.getTag();
+        return tag != null ? tag.getString() : null;
     }
 
     @Override