Bob is cold. Bob is smart. Bob is young. Dave is big. Dave is cold. Dave is nice. Dave is red. Dave is rough. Dave is smart. Dave is young. Fiona is big. Fiona is cold. Fiona is red. Fiona is rough. Fiona is smart. Fiona is young. All big, nice things are young. If something is cold then it is rough. If something is rough then it is smart.
Bob is not rough.