Bob is cold. Bob is young. Dave is furry. Dave is nice. Fiona is round. Gary is blue. Gary is young. All round things are cold. If Dave is furry then Dave is young. If Fiona is young and Fiona is round then Fiona is cold. Cold, furry things are blue. All nice, young things are green. If something is green and nice then it is round. If Gary is young and Gary is blue then Gary is nice. If Gary is young and Gary is not green then Gary is furry. If something is not cold then it is blue.
Bob is blue.