Apply is a type of Refer. Apply is related to Reply. Reply is related to Cat. Cat is related to Curiosity. 
you are likely to find Cattle in/at/on Country. Country is related to Discover. Discover is a synonym of Expose. Expose is a type of Subject. 
Refer <--IsA-- Apply <--RelatedTo--> Reply <--RelatedTo--> Cat <--RelatedTo--> Curiosity 
Cattle --AtLocation--> Country <--RelatedTo--> Discover <--Synonym--> Expose --IsA--> Subject 