Coal is related to Generation. Generation is related to Baby. Baby is related to Pregnancy. Pregnancy is a synonym of Abortion. 
one thing you do when you Fence is Loose. Loose is the opposite of Exact. 
Coal <--RelatedTo--> Generation <--RelatedTo--> Baby <--RelatedTo--> Pregnancy <--Synonym--> Abortion 
Fence --HasSubevent--> Loose <--Antonym--> Exact 