People can be Unfair. People is related to Rice. Rice is related to Chicken. Chicken is related to Farm. 
Convict is a type of Prisoner. Prisoner is the opposite of Guard. Guard is related to Authority. 
Unfair <--HasProperty-- People <--RelatedTo--> Rice <--RelatedTo--> Chicken <--RelatedTo--> Farm 
Convict --IsA--> Prisoner <--Antonym--> Guard <--RelatedTo--> Authority 