Erin is quiet. Fiona is blue. Fiona is green. Gary is green. Gary is kind. Gary is red. Harry is quiet. If something is red then it is blue. If Fiona is kind then Fiona is red. All green, red things are quiet. Kind, red things are quiet. All blue things are young. If Fiona is young and Fiona is rough then Fiona is kind. If something is young and green then it is rough. Young things are rough.
Erin is red.