Trial is etymologically related to Try. Trial is related to Judge. Review is a type of Judge. 
Bull is related to Possible. Possible is related to Theory. Theory is related to Belief. 
Try <--EtymologicallyRelatedTo-- Trial <--RelatedTo--> Judge <--IsA-- Review 
Bull <--RelatedTo--> Possible <--RelatedTo--> Theory <--RelatedTo--> Belief 