Erin is nice. Erin is rough. Fiona is cold. Fiona is furry. Fiona is nice. Fiona is quiet. Fiona is round. Rough, round people are blue. Round, nice people are quiet. If someone is round and quiet then they are blue. If someone is cold then they are nice. All rough, cold people are blue. If Fiona is round then Fiona is blue. If someone is nice then they are furry. Furry, cold people are round.
Erin is not round.