Question 6 [1 pt]: What is a Horn Clause? (0.25 pt) What is the purpose of using horn clauses? (0.25 pt). Given the following knowledge base of Horn clauses, please draw the corresponding AND-OR graph (0.25 pt). Please using PL-FC-ENTAIL?(KB, q) to whether KB FQ is true or not (show your solutions [0.25 pt]) PQ: B^L^MP; A^LM; A^BL; A; B;