Charlie is big. Charlie is blue. Charlie is quiet. Charlie is not round. Charlie is not young. Dave is big. Dave is green. Dave is quiet. Dave is round. Gary is blue. Gary is not green. Gary is quiet. Gary is round. Gary is white. Gary is young. Green people are quiet. If someone is young and not green then they are blue. If someone is blue then they are not green. Young, green people are not big. Green, quiet people are round. If someone is big then they are not young. If Gary is big and Gary is not young then Gary is not green. If someone is green and blue then they are big.
Dave is not quiet.