Let is a type of Leave. Let is a type of Serve. Serve is a type of Move. Bolt is a type of Move. 
Throat is related to Horse. Horse is related to Cow. you are likely to find Cow in/at/on Book. Textbook is a type of Book. 
Leave <--IsA-- Let --IsA--> Serve --IsA--> Move <--IsA-- Bolt 
Throat <--RelatedTo--> Horse <--RelatedTo--> Cow --AtLocation--> Book <--IsA-- Textbook 