premise: A man is operating a piece of machinery.
hypothesis: Some men are working on a machine
explanation_1: A man operating a piece of machinery does not imply that some men are working on a machine.
premise_logic: exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_operate(e1) & of(x2,x3) & n_machinery(x3) & n_piece(x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2.(on(e1,x2) & n_machine(x2) & Actor(e1,x1) & v_work(e1) & n_man(x1))
premise_sim: exists e1 x1 x2 x3.(v_operate(e1) & of(x2,x3) & n_piece(x2) & n_man(x1) & n_machinery(x3) & Theme(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_work(e1) & on(e1,x2) & n_man(x1) & n_machine(x2) & Actor(e1,x1))