Wave is related to Ride. Ride is a synonym of Lift. 
People can be Ethical. People is related to Shark. Shark is related to Animal. Animal is related to Shell. 
Wave <--RelatedTo--> Ride <--Synonym--> Lift 
Ethical <--HasProperty-- People <--RelatedTo--> Shark <--RelatedTo--> Animal <--RelatedTo--> Shell 