you are likely to find Gasoline in/at/on Boat. you are likely to find Net in/at/on Boat. Net is related to Tennis. Tennis is a type of Activity. 
Tongue is a synonym of Spit. 
Gasoline --AtLocation--> Boat <--AtLocation-- Net <--RelatedTo--> Tennis --IsA--> Activity 
Tongue <--Synonym--> Spit 