Two construction workers cutting a piece of concrete road.
One of the men is running  a jackhammer.
Cutting a piece of concrete road does not imply that one of them are running a jackhammer.  Not all workers are men.
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_cut(e1) & of(x3,x4) & n_road(x4) & a_concrete(s1) & Theme(s1,x4) & n_piece(x3) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_man(x2) & Theme(e1,x3) & Actor(e1,x1) & v_run(e1) & n_jackhammer(x3) & of(x1,x2) & n_thing(x1) & card_eq_1(x1))