premise: A man with a dog walking down the sidewalk with someone behind him with a bag. hypothesis: A man walks his dog while his grossed out son carries dog poo away from his body in a bag.
neutral: Although the man is walking a dog, it does not imply it is his dog.  Although someone is behind him with a bag, it does not imply that it is his grossed out son carries dog poo away from his body in a bag.