you are likely to find Meat in/at/on Oven. you are likely to find Meat in/at/on Package. Pack is a type of Package. 
Stuff is related to Soap. Soap is related to Face. Face is related to Bill. 
Oven <--AtLocation-- Meat --AtLocation--> Package <--IsA-- Pack 
Stuff <--RelatedTo--> Soap <--RelatedTo--> Face <--RelatedTo--> Bill 