Erin is big. Erin is cold. Erin is furry. Erin is rough. Erin is round. Erin is smart. Erin is young. All cold, round things are young. All furry, smart things are round. Big things are rough. All smart things are young. If Erin is young then Erin is cold. Smart, young things are cold. If Erin is furry and Erin is round then Erin is rough. If something is round and smart then it is big.
Erin is not rough.