premise: Two dogs run together across a grassy lawn.
hypothesis: The dogs are swimming.
explanation_1: Dogs cannot be both running across a grassy lawn and swimming.
explanation_2: dogs can't be swimming if they run across grassy lawn
explanation_3: If they run across a grassy lawn, they are not swimming.
premise_logic: exists e1 s1 s2 x1 x2.(across(e1,x2) & n_lawn(x2) & a_grassy(s2) & Theme(s2,x2) & a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & card_eq_2(x1))
hypothesis_logic: exists e1 x1.(n_dog(x1) & Actor(e1,x1) & v_swim(e1))