premise: Two dogs playing on snow covered ground
hypothesis: The dogs are both brown.
explanation_1: The color of the dogs in the first sentence isn't mentioned as being brown.
explanation_2: Not all dog pairs are both brown.
explanation_3: There is no mention of the dogs being brown.
premise_logic: exists e2 e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_ground(x3) & Theme(e2,x3) & v_cover(e2) & of(x3,x4) & n_snow(x4) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))
hypothesis_logic: exists s1 x1.(n_dog(x1) & r_both(s1) & Theme(s1,x1) & a_brown(s1))