• 7. Add a rule: - using facts to be asked or given (with "has"): "if animal has scales and animal has cold-blood then animal is a reptile." - using existing rules (with "is a"): "if animal is a reptile and animal has enormous-size and animal has hollywood-fame then animal is a godzilla." 8. Add a fact: "hamster is a pet." or "add hamster to pet." 9. Create a new group: "create group feline."