Pipe is related to Smoke. Smoke is related to Activity. 
Playoff is a type of Contest. Contest is a synonym of Discussion. Discussion is derived from Discuss. Discuss is a synonym of Discourse. 
Pipe <--RelatedTo--> Smoke <--RelatedTo--> Activity 
Playoff --IsA--> Contest <--Synonym--> Discussion --DerivedFrom--> Discuss <--Synonym--> Discourse 