Biology is a different concept from Chemistry. Chemistry is related to Course. Course is a type of Education. 
Character is related to Star. Star is related to General. General is related to Man. Man is the opposite of People. 
Biology <--DistinctFrom--> Chemistry <--RelatedTo--> Course --IsA--> Education 
Character <--RelatedTo--> Star <--RelatedTo--> General <--RelatedTo--> Man <--Antonym--> People 