premise: A dog plays with a stuffed animal.
hypothesis: The dog is chewing on his toy.
explanation_1: The dog is playing, that does not mean chewing.  And, you don't know if it's his toy.
explanation_2: Just because a dog plays with a stuffed animal does not mean the dog is chewing on it.
explanation_3: playing with and chewing are two separate actions and the top sentence only says he is playing with.
premise_logic: exists e1 s1 x1 x2.(with(e1,x2) & n_animal(x2) & a_stuffed(s1) & Theme(s1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1))
hypothesis_logic: exists e1 x1 x2.(n_toy(x2) & of(x2,x1) & n_male(x1) & n_dog(x1) & on(e1,x2) & Actor(e1,x1) & v_chew(e1))
premise_sim: exists e1 s1 x1 x2.(with(e1,x2) & v_play(e1) & n_dog(x1) & n_animal(x2) & a_stuffed(s1) & Theme(s1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_chew(e1) & on(e1,x2) & of(x2,x1) & n_toy(x2) & n_male(x1) & n_dog(x1) & Actor(e1,x1))