premise: A man doing maintenance on the railroad tracks
hypothesis: There is a woman doing work on the railroad tracks.
explanation_1: The worker is either a man or a woman, not both.
explanation_2: Man and woman are two different genders
explanation_3: A man is different from a woman.
premise_logic: exists e1 x1 x2 x3 x4 x5.(n_track(x4) & of(x4,x5) & n_railroad(x5) & a_topic(x1) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_maintenance(x3) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists p1 x1 x5 x6.(n_track(x5) & of(x5,x6) & n_railroad(x6) & exists e1 x2 x3 x4.((x1 = x2) & on(e1,x5) & Theme(e1,x4) & Actor(e1,x3) & v_do(e1) & n_work(x4) & (x2 = x3) & n_woman(x2)))