Contribution is derived from Contribute. Contribute is a synonym of Lead. Lead is a type of Strip. 
Play is related to School. School is related to Popular. Popular is related to Standing. Standing is related to Leg. 
Contribution --DerivedFrom--> Contribute <--Synonym--> Lead --IsA--> Strip 
Play <--RelatedTo--> School <--RelatedTo--> Popular <--RelatedTo--> Standing <--RelatedTo--> Leg 