Cart is related to Horse. Horse is related to Mount. 
Biological is the opposite of Adopt. Adopt is a synonym of Follow. Follow is a synonym of Comply. Comply is the opposite of Violate. 
Cart <--RelatedTo--> Horse <--RelatedTo--> Mount 
Biological <--Antonym--> Adopt <--Synonym--> Follow <--Synonym--> Comply <--Antonym--> Violate 