premise: A man with black clothing is sweeping steps with a broom.
hypothesis: The man is sweeping the steps.
explanation_1: The man sweeping steps with a broom is wearing black
explanation_2: A man sweeping steps with a broom is sweeping steps.
explanation_3: For sweeping the steps one must be sweeping the steps with a broom.
premise_logic: exists p1 s1 x1 x2.(exists s2 x3 x4.((x1 = x3) & with(x3,x4) & n_broom(x4) & n_step(x3) & a_sweeping(s2) & Theme(s2,x3)) & with(x1,x2) & n_clothing(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2.(n_step(x2) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_sweep(e1))