Charlie is furry. Charlie is round. Charlie is young. Erin is big. Erin is nice. Erin is rough. Erin is young. Fiona is big. Fiona is nice. Harry is big. Harry is nice. If something is young then it is kind. All kind things are young. If something is nice and rough then it is furry. If something is nice then it is young. Rough, kind things are furry. All round things are rough. If something is young and kind then it is round.
Erin is not round.