Speculate is a type of Invest. Speculate is a type of Reason. Reason is a type of Faculty. 
Action is related to Care. Care is related to Sentence. Sentence is a synonym of Judge. 
Invest <--IsA-- Speculate --IsA--> Reason --IsA--> Faculty 
Action <--RelatedTo--> Care <--RelatedTo--> Sentence <--Synonym--> Judge 