Bob is cold. Charlie is rough. Fiona is smart. Harry is rough. If someone is big and blue then they are young. If Fiona is cold and Fiona is rough then Fiona is young. Rough, smart people are blue. All smart people are young. If Fiona is round then Fiona is rough. Smart people are blue. If Bob is cold then Bob is young. If Bob is big and Bob is smart then Bob is rough.
Harry is not blue.