Anne is nice. Anne is rough. Fiona is blue. Fiona is furry. Gary is blue. Gary is red. Harry is furry. Harry is green. Harry is red. Harry is rough. All quiet people are rough. If Harry is rough and Harry is blue then Harry is red. Green people are nice. Rough people are quiet. If someone is blue then they are rough. If Gary is rough and Gary is quiet then Gary is green. If someone is nice then they are furry.
Gary is not rough.