Bob is cold. Bob is red. Bob is rough. Bob is round. Bob is smart. Dave is not green. Dave is not red. Dave is young. Erin is cold. Erin is rough. Erin is round. Erin is not smart. Erin is young. Fiona is not cold. Fiona is green. Fiona is not young. If Fiona is smart then Fiona is not rough. All young, cold people are green. Round, cold people are young. If someone is round then they are young. Red, cold people are round. If Bob is green and Bob is not cold then Bob is not red. If someone is cold and not rough then they are not round. If someone is young and not green then they are not rough.
Dave is not young.