Question: Can a greyhound walk on two legs?, Answer:No, Description of Greyhound: Dog breed used in dog racing, Fact1: Greyhounds are dogs., Fact2: Dogs walk on four legs. 
Step1: What type of animal is a greyhound?, Step2: Does #1 walk on two legs?, Wikipedia page for step 1: Greyhound , Wikipedia page for step 2: Dog, not_definitive_answer: False, incorrect_answer: False