premise: A dog is walking down steps.
hypothesis: A large dog is walking down the front steps.
explanation_1: Not all dogs are large. Steps can be in many directions and aren't limited to being front steps.
explanation_2: Not all dog is a large dog.
explanation_3: The sentence doesn't say the size of the dog is large or that they are the front steps.
premise_logic: exists e1 s1 x1 x2.(a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_step(x2) & n_dog(x1))
hypothesis_logic: exists e1 s1 s2 s3 x1 x2.(n_step(x2) & a_front(s2) & Theme(s2,x2) & a_down(s3) & Manner(e1,s3) & Theme(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_dog(x1) & a_large(s1) & Theme(s1,x1))
premise_sim: exists e1 s1 x1 x2.(v_walk(e1) & n_step(x2) & n_dog(x1) & a_down(s1) & Theme(e1,x2) & Manner(e1,s1) & Actor(e1,x1))
hypothesis_sim: exists e1 s1 s2 s3 x1 x2.(v_walk(e1) & n_step(x2) & n_dog(x1) & a_large(s1) & a_front(s2) & a_down(s3) & Theme(s2,x2) & Theme(s1,x1) & Theme(e1,x2) & Manner(e1,s3) & Actor(e1,x1))