premise: A man operates a piece of earth-moving equipment near a waterway.
hypothesis: The man is eating lunch
explanation_1: The man can not be eating and operating machinery at the same time.
explanation_2: One does not operate earth-moving equipment and eat lunch at the same time.
explanation_3: A man cannot be eating lunch while he operates equipment simultaneously.
premise_logic: exists e1 s1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_operate(e1) & near(x2,x4) & n_waterway(x4) & of(x2,x3) & n_equipment(x3) & a_earth-moving(s1) & Theme(s1,x3) & n_piece(x2) & n_man(x1))
hypothesis_logic: exists p1 x1.(n_man(x1) & exists s1 x2.((x1 = x2) & n_lunch(x2) & a_eating(s1) & Theme(s1,x2)))