Period is related to Year. Year is related to Resolution. Resolution is a synonym of Solution. Solution is a different concept from Cause. 
Adopt is the opposite of Child. Child is related to Kid. 
Period <--RelatedTo--> Year <--RelatedTo--> Resolution <--Synonym--> Solution <--DistinctFrom--> Cause 
Adopt <--Antonym--> Child <--RelatedTo--> Kid 