Widow is a type of Woman. Woman is related to Big. Big is related to Myth. 
Final is related to Space. Space is the opposite of Oxygen. Oxygen is related to Blood. Blood is related to Transportation. 
Widow --IsA--> Woman <--RelatedTo--> Big <--RelatedTo--> Myth 
Final <--RelatedTo--> Space <--Antonym--> Oxygen <--RelatedTo--> Blood <--RelatedTo--> Transportation 