premise: A man in a hard hat and orange safety vest works on a machine in smoky air.
hypothesis: Two dogs are fighting.
explanation_1: A man cannot also be two dogs
explanation_2: A man cannot be the two dogs.
explanation_3: A man is not a dog. The subjects cannot be about the same individual/creature.
premise_logic: exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(in(e1,x8) & n_air(x8) & a_smoky(s2) & Theme(s2,x8) & on(e1,x7) & n_machine(x7) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & n_vest(x4) & of(x4,x6) & n_safety(x6) & of(x4,x5) & n_orange(x5) & n_hat(x3) & a_hard(s1) & Theme(s1,x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_man(x1))
hypothesis_logic: exists e1 x1.(Actor(e1,x1) & v_fight(e1) & n_dog(x1) & card_eq_2(x1))