Forget is the opposite of Acquire. Acquire is related to Adopt. Adopt is related to Legal. 
Program is a synonym of Broadcast. Episode is a type of Broadcast. Episode is related to Issue. Fall is a type of Issue. 
Forget <--Antonym--> Acquire <--RelatedTo--> Adopt <--RelatedTo--> Legal 
Program <--Synonym--> Broadcast <--IsA-- Episode <--RelatedTo--> Issue <--IsA-- Fall 