you are likely to find Food in/at/on Truck. you are likely to find Food in/at/on Bowl. Bowl is a type of Vessel. 
Seed is related to Ground. Ground is related to Post. Post is related to College. College is related to Merit. 
Truck <--AtLocation-- Food --AtLocation--> Bowl --IsA--> Vessel 
Seed <--RelatedTo--> Ground <--RelatedTo--> Post <--RelatedTo--> College <--RelatedTo--> Merit 