Plane is related to Flying. Flying is a synonym of Quick. 
you are likely to find Bee in/at/on Backyard. you are likely to find Bee in/at/on Sky. Sky can be Bright. Bright is the opposite of Gray. 
Plane <--RelatedTo--> Flying <--Synonym--> Quick 
Backyard <--AtLocation-- Bee --AtLocation--> Sky --HasProperty--> Bright <--Antonym--> Gray 