Anne is furry. Anne is green. Anne is quiet. Charlie is green. Charlie is quiet. Fiona is furry. Harry is white. If someone is nice then they are white. All nice, rough people are round. If Fiona is quiet then Fiona is green. If someone is quiet and round then they are nice. All rough people are quiet. If someone is furry then they are rough. All quiet, green people are round. If Anne is round and Anne is green then Anne is rough. Quiet people are round.
Charlie is not rough.