premise: A man walks by a building at night.
hypothesis: A man is walking.
explanation_1: Is walking is a rephrasing of walks.
explanation_2: For a man to be walking, a man must walk.
explanation_3: "A man is walking" is another way to say "a man walks".
premise_logic: exists e1 x1 x2 x3.(by(e1,x2) & at(x2,x3) & n_night(x3) & n_building(x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1))
hypothesis_logic: exists e1 x1.(Actor(e1,x1) & v_walk(e1) & n_man(x1))
premise_sim: exists e1 x1 x2 x3.(v_walk(e1) & n_night(x3) & n_man(x1) & n_building(x2) & by(e1,x2) & at(x2,x3) & Actor(e1,x1))
hypothesis_sim: exists e1 x1.(v_walk(e1) & n_man(x1) & Actor(e1,x1))