Airplane is a type of Vehicle. you are likely to find Seat in/at/on Airplane. Wheelchair is a type of Seat. you are likely to find Wheelchair in/at/on Home. 
Touchdown is a synonym of Try. Try is a synonym of Attempt. 
Vehicle <--IsA-- Airplane <--AtLocation-- Seat <--IsA-- Wheelchair --AtLocation--> Home 
Touchdown <--Synonym--> Try <--Synonym--> Attempt 