Practice 27/28

This says that ``x eats plant y''. Only the deer in this database satisfies this wff.

Practice 28/29

a. preditor(y) if eat(y,x) and animal(x)

b. bear, fish, raccoon, bear, bear, fox, bear, wildcat

Practice 29/30

  
Table: Recursive solution of remainder of in-food-chain(bear,X).