Stir is a type of Move. Move is related to Truck. Truck is related to Bed. Bed is related to Sofa. 
Sugar is a type of Molecule. Sugar is related to Flavor. Flavor is related to Appeal. Plead is a type of Appeal. 
Stir --IsA--> Move <--RelatedTo--> Truck <--RelatedTo--> Bed <--RelatedTo--> Sofa 
Molecule <--IsA-- Sugar <--RelatedTo--> Flavor <--RelatedTo--> Appeal <--IsA-- Plead 