Feel is related to Health. Health is derived from Heal. Heal is the opposite of Break. Break is related to Fragile. 
Desk is related to Surface. Surface is related to Slide. 
Feel <--RelatedTo--> Health --DerivedFrom--> Heal <--Antonym--> Break <--RelatedTo--> Fragile 
Desk <--RelatedTo--> Surface <--RelatedTo--> Slide 