premise: A man in a green shirt and black hat is smoothing concrete.
hypothesis: The man is drilling into concrete.
explanation_1: The man cannot be drilling concrete and smoothing concrete at the same time.
explanation_2: man can't be drilling concrete if he is smoothing concrete
explanation_3: One sentence states the man is smoothing concrete, the next states that he's drilling it.
premise_logic: exists e1 s1 s2 x1 x2 x3 x4 x5.(Theme(e1,x5) & Actor(e1,x1) & v_smooth(e1) & n_concrete(x5) & in(x1,x2) & n_hat(x4) & a_black(s2) & Theme(s2,x4) & n_shirt(x3) & a_green(s1) & Theme(s1,x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2.(n_man(x1) & into(e1,x2) & n_concrete(x2) & Actor(e1,x1) & v_drill(e1))