Bob is big. Bob is quiet. Bob is young. Fiona is furry. Fiona is rough. Fiona is young. Gary is big. Gary is furry. Gary is rough. Gary is white. Rough, young things are white. If Gary is big and Gary is cold then Gary is rough. Cold things are young. All furry things are big. If something is white then it is furry. If Fiona is big and Fiona is cold then Fiona is white. White, furry things are big. All cold, quiet things are rough.
Bob is not furry.