Ambition is related to Enthusiasm. Enthusiasm is a type of Feeling. Feeling is related to Oil. 
Literature is related to Drama. Dramatic is derived from Drama. Dramatic is related to Play. Cave can be used for Play. 
Ambition <--RelatedTo--> Enthusiasm --IsA--> Feeling <--RelatedTo--> Oil 
Literature <--RelatedTo--> Drama <--DerivedFrom-- Dramatic <--RelatedTo--> Play <--UsedFor-- Cave 