Sight is part of Perception. Sight is related to Snow. Snow is related to Stuff. 
Live is related to Play. Play is a type of Exhaust. Exhaust is a type of System. System is related to Number. 
Perception <--PartOf-- Sight <--RelatedTo--> Snow <--RelatedTo--> Stuff 
Live <--RelatedTo--> Play --IsA--> Exhaust --IsA--> System <--RelatedTo--> Number 