Elbow is related to Middle. Middle is related to Area. Territory is a type of Area. Territory is related to Space. 
Veteran is related to Military. Military is related to Service. Service is a type of Aid. Aid is a synonym of Cooperate. 
Elbow <--RelatedTo--> Middle <--RelatedTo--> Area <--IsA-- Territory <--RelatedTo--> Space 
Veteran <--RelatedTo--> Military <--RelatedTo--> Service --IsA--> Aid <--Synonym--> Cooperate 