Stir is a synonym of Poke. Poke is related to Stick. Stick is related to Bone. Bone is related to Structural. 
Aircraft is related to Cargo. you are likely to find Cargo in/at/on Boat. Boat is related to Passenger. you are likely to find Passenger in/at/on Airport. 
Stir <--Synonym--> Poke <--RelatedTo--> Stick <--RelatedTo--> Bone <--RelatedTo--> Structural 
Aircraft <--RelatedTo--> Cargo --AtLocation--> Boat <--RelatedTo--> Passenger --AtLocation--> Airport 