premise: A brown dog carries an object in its mouth on a snowy hillside.
hypothesis: A dog is carrying an object down a grassy side.
explanation_1: If the hillside is covered in snow it wouldn't be described as grassy.
explanation_2: If the hillside is snowy, it more then likely will not be grassy.
explanation_3: Snow generally covers the grass which would me there could not be a grassy side.
premise_logic: exists e1 s1 s2 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & in(x2,x3) & on(x3,x4) & n_hillside(x4) & a_snowy(s2) & Theme(s2,x4) & n_mouth(x3) & of(x3,x1) & n_thing(x1) & n_object(x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & down(x2,x3) & n_side(x3) & a_grassy(s1) & Theme(s1,x3) & n_object(x2) & n_dog(x1))