Live requires Retire. Live is related to Active. 
Mouth is related to Eat. Eat is related to Necessity. Necessity is related to Turn. Turn is the opposite of Still. 
Retire <--HasPrerequisite-- Live <--RelatedTo--> Active 
Mouth <--RelatedTo--> Eat <--RelatedTo--> Necessity <--RelatedTo--> Turn <--Antonym--> Still 