Cart is a synonym of Haul. Haul is related to Heavy. Heavy is a synonym of Big. Big is related to Cow. 
one thing you do when you Ski is Sweat. Sweat is related to Cool. 
Cart <--Synonym--> Haul <--RelatedTo--> Heavy <--Synonym--> Big <--RelatedTo--> Cow 
Ski --HasSubevent--> Sweat <--RelatedTo--> Cool 