Automatic is a type of Gun. you are likely to find Gun in/at/on Desk. you are likely to find Mouse in/at/on Desk. you are likely to find Mouse in/at/on Backyard. 
you are likely to find Gun in/at/on Drawer. Gun is related to Target. Target is similar to Source. 
Automatic --IsA--> Gun --AtLocation--> Desk <--AtLocation-- Mouse --AtLocation--> Backyard 
Drawer <--AtLocation-- Gun <--RelatedTo--> Target <--SimilarTo--> Source 