Backward chaining example Backward chaining example Backward chaining example Backward chaining example Backward chaining exampleBackward chaining example P Q M L A B Chapter 7 55 Backward chaining example P M L A Q B Chapter 7 56 Backward chaining example M L A P Q B Chapter 7 57 Backward chaining example M A P Q L B Chapter 7 58 Backward chaining example M L A P Q B Chapter 7 59 Backward chaining example M A P Q L B Chapter 7 60