Flee is the opposite of Come. Come is a type of Happen. Happen is related to Occur. 
Theory is related to Fun. Fun is related to Card. Card is related to Stiff. Stiff is related to Board. 
Flee <--Antonym--> Come --IsA--> Happen <--RelatedTo--> Occur 
Theory <--RelatedTo--> Fun <--RelatedTo--> Card <--RelatedTo--> Stiff <--RelatedTo--> Board 