Mate is a synonym of Match. Match is a synonym of Couple. 
you are likely to find Gasoline in/at/on Boat. you are likely to find Net in/at/on Boat. Net is similar to Clear. Clear is a synonym of Authorize. 
Mate <--Synonym--> Match <--Synonym--> Couple 
Gasoline --AtLocation--> Boat <--AtLocation-- Net <--SimilarTo--> Clear <--Synonym--> Authorize 