premise: Two men working on farm equipment that is being pulled by two horses.
hypothesis: The equipment is being pulled by sheep.
explanation_1: Two horses and sheep are different animals.
explanation_2: Sheep and horses are different species.
explanation_3: Equipment cannot be pulled by horses and sheep at the same time
premise_logic: exists e1 e2 x1 x2 x3 x4 x5 x6.(a_topic(x1) & on(e1,x3) & Actor(e2,x6) & n_horse(x6) & card_eq_2(x6) & Theme(e2,x5) & v_pull(e2) & (x3 = x5) & n_equipment(x3) & of(x3,x4) & n_farm(x4) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_man(x1) & card_eq_2(x1))
hypothesis_logic: exists e1 x1 x2.(n_equipment(x1) & Actor(e1,x2) & n_sheep(x2) & Theme(e1,x1) & v_pull(e1))