Ruin is related to Stone. Stone is related to Rough. Rough is the opposite of Fine. Fine is related to Surface. 
Lock is a type of Overwhelm. Lock is part of Door. 
Ruin <--RelatedTo--> Stone <--RelatedTo--> Rough <--Antonym--> Fine <--RelatedTo--> Surface 
Overwhelm <--IsA-- Lock --PartOf--> Door 