Land is related to Sky. Sky is related to Space. Space is related to Distance. 
Stock is a type of Equip. Appoint is a type of Equip. Appoint is related to Official. 
Land <--RelatedTo--> Sky <--RelatedTo--> Space <--RelatedTo--> Distance 
Stock --IsA--> Equip <--IsA-- Appoint <--RelatedTo--> Official 