Bob is furry. Bob is kind. Bob is round. Charlie is blue. Charlie is round. Erin is blue. Erin is red. Erin is rough. Fiona is blue. Fiona is furry. Fiona is green. Fiona is kind. Fiona is red. Fiona is rough. Fiona is round. If Charlie is rough then Charlie is blue. If Erin is red then Erin is round.
Erin is not round.