1. A) (5 pts.) Suppose the agent has progressed to [2,2] having perceived nothing in [1,1], nothing in [2,1], a breeze in [1,2], and a stench in [2,2], a breeze in [3,1] and is now concerned with the contents of [1,3], [2,3], [4,1] and [3,2]. Each of these can contain nothing, a pit, and at most one can contain a wumpus. Construct the set of worlds in which the KB is true (need not show all possible worlds). In addition, indicate which worlds have the following sentences as true: There is no pit in [4,1] . There is a wumpus in [2,3] B) (5 pts.) Provide the proof by refutation for Prove Goal 3 Goal 3: You will get wet C) Write a LISP function that takes as input a list and returns a list that is an actual set (ie. removes all duplicates). 1. A) (5 pts.) Suppose the agent has progressed to [2,2] having perceived nothing in [1,1], nothing in [2,1], a breeze in [1,2], and a stench in [2,2], a breeze in [3,1] and is now concerned with the contents of [1,3], [2,3], [4,1] and [3,2]. Each of these can contain nothing, a pit, and at most one can contain a wumpus. Construct the set of worlds in which the KB is true (need not show all possible worlds). In addition, indicate which worlds have the following sentences as true: There is no pit in [4,1] . There is a wumpus in [2,3] B) (5 pts.) Provide the proof by refutation for Prove Goal 3 Goal 3: You will get wet C) Write a LISP function that takes as input a list and returns a list that is an actual set (ie. removes all duplicates)