Flat is related to Door. Door is related to Leave. Leave is related to Abandon. 
Thought is related to Question. Question is related to Conversation. Conversation is related to Listen. Listen is related to List. 
Flat <--RelatedTo--> Door <--RelatedTo--> Leave <--RelatedTo--> Abandon 
Thought <--RelatedTo--> Question <--RelatedTo--> Conversation <--RelatedTo--> Listen <--RelatedTo--> List 