premise: A person crossing a bridge with train tracks.
hypothesis: There was a woman tip-toeing across the train tracks.
explanation_1: One can be either crossing a bridge with train tracks or tip-toeing across the train tracks.
explanation_2: One can either be crossing or tip-toeing but not both
explanation_3: one can't be crossing a bridge and a train track at the same time
premise_logic: exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & with(e1,x4) & n_track(x4) & of(x4,x5) & n_train(x5) & Theme(e1,x3) & Actor(e1,x2) & v_cross(e1) & n_bridge(x3) & (x1 = x2) & n_person(x1))
hypothesis_logic: exists p1 x1 x2 x3.(n_track(x2) & of(x2,x3) & n_train(x3) & across(p1,x2) & exists x4 x5.((x1 = x4) & n_tip-toeing(x4) & of(x4,x5) & n_woman(x5)))