diff --git a/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/DeltaExtractor.java b/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/DeltaExtractor.java
index 47cb66d..ac631ce 100644
--- a/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/DeltaExtractor.java
+++ b/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/DeltaExtractor.java
@@ -858,6 +858,7 @@
 
 	private ExtractedStructure extractSub(TracePoint creationTracePoint, Reference targetRef, IAliasCollector aliasCollector) {
 		eStructure = new ExtractedStructure();
+		eStructure.setRelatedTracePoint(creationTracePoint.duplicate());
 		ArrayList<String> objList = new ArrayList<String>(); 
 		srcObject = targetRef.getSrcObject();
 		dstObject = targetRef.getDstObject();
@@ -915,11 +916,12 @@
 	 * @return ���o����
 	 */
 	public ExtractedStructure extract(TracePoint thisTracePoint, ObjectReference anotherObj, IAliasCollector aliasCollector) {
+		eStructure = new ExtractedStructure();
+		eStructure.setRelatedTracePoint(thisTracePoint.duplicate());
 		MethodExecution methodExecution = thisTracePoint.getMethodExecution();
 		if (!thisTracePoint.isMethodEntry()) {
 			thisTracePoint.stepNext();
 		}
-		eStructure = new ExtractedStructure();
 		ArrayList<String> objList = new ArrayList<String>();
 		String thisObjectId = methodExecution.getThisObjId();
 		objList.add(thisObjectId);
diff --git a/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/DeltaExtractorJSON.java b/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/DeltaExtractorJSON.java
index ff9da6a..693ed5e 100644
--- a/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/DeltaExtractorJSON.java
+++ b/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/DeltaExtractorJSON.java
@@ -605,6 +605,7 @@
 						if (objectId.equals(srcObject.getId())) {
 							r = new Reference(arguments.get(0), srcObject);
 							r.setCollection(true);
+							r.setCreation(true);		// �߂�l�I�u�W�F�N�g�𐶐������Ƃ݂Ȃ�
 							eStructure.addSrcSide(r);
 							srcObject = arguments.get(0);
 							aliasCollector.changeTrackingObject(objectId, arguments.get(0).getId(), true);
@@ -612,6 +613,7 @@
 						} else if(objectId.equals(dstObject.getId())) {
 							r = new Reference(arguments.get(0), dstObject);
 							r.setCollection(true);
+							r.setCreation(true);		// �߂�l�I�u�W�F�N�g�𐶐������Ƃ݂Ȃ�
 							eStructure.addDstSide(r);
 							dstObject =arguments.get(0);
 							aliasCollector.changeTrackingObject(objectId, arguments.get(0).getId(), false);
@@ -624,6 +626,11 @@
 					if (objectId.equals(srcObject.getId())) {
 						r = new Reference(thisObj, srcObject);
 						r.setCollection(true);
+						if (methodExecution.getSignature().contains(".iterator()")
+								|| methodExecution.getSignature().contains(".listIterator()") 
+								|| methodExecution.getSignature().contains(".entrySet()")
+								|| methodExecution.getSignature().contains(".keySet()")
+								|| methodExecution.getSignature().contains(".values()")) r.setCreation(true);		// �C�e���[�^�I�u�W�F�N�g���𐶐������Ƃ݂Ȃ�
 						eStructure.addSrcSide(r);
 						srcObject = thisObj;
 						aliasCollector.changeTrackingObject(objectId, thisObjectId, true);
@@ -631,6 +638,11 @@
 					} else if(objectId.equals(dstObject.getId())) {
 						r = new Reference(thisObj, dstObject);
 						r.setCollection(true);
+						if (methodExecution.getSignature().contains(".iterator()")
+								|| methodExecution.getSignature().contains(".listIterator()")
+								|| methodExecution.getSignature().contains(".entrySet()")
+								|| methodExecution.getSignature().contains(".keySet()")
+								|| methodExecution.getSignature().contains(".values()")) r.setCreation(true);		// �C�e���[�^�I�u�W�F�N�g���𐶐������Ƃ݂Ȃ�
 						eStructure.addDstSide(r);
 						dstObject =thisObj;
 						aliasCollector.changeTrackingObject(objectId, thisObjectId, false);
diff --git a/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/ExtractedStructure.java b/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/ExtractedStructure.java
index 6e47f75..8d5eaa4 100644
--- a/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/ExtractedStructure.java
+++ b/org.ntlab.traceAnalyzer/src/org/ntlab/deltaExtractor/ExtractedStructure.java
@@ -2,6 +2,7 @@
 
 import org.ntlab.trace.MethodExecution;
 import org.ntlab.trace.Reference;
+import org.ntlab.trace.TracePoint;
 
 
 public class ExtractedStructure {
@@ -10,6 +11,7 @@
 	private MethodExecution coordinator = null;
 	private MethodExecution parent = null;
 	private MethodExecution creationCallTree;
+	private TracePoint relatedTracePoint = null;
 
 	public Delta getDelta() {
 		return delta;
@@ -65,4 +67,12 @@
 		return creationCallTree;
 	}
 	
+	public void setRelatedTracePoint(TracePoint relatedTracePoint) {
+		this.relatedTracePoint  = relatedTracePoint;
+	}
+
+	public TracePoint getRelatedTracePoint() {
+		return relatedTracePoint;
+	}
+	
 }