Two men are preparing dinner over a fire with tin cans.
Two men cooking food over a fire.
If they are preparing dinner over a fire, it is implied that they are cooking.
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x2) & Actor(e1,x1) & v_prepare(e1) & over(x2,x3) & with(x3,x4) & n_can(x4) & of(x4,x5) & n_tin(x5) & n_fire(x3) & n_dinner(x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & over(e1,x4) & n_fire(x4) & Theme(e1,x3) & Actor(e1,x2) & v_cook(e1) & n_food(x3) & (x1 = x2) & n_man(x1) & card_eq_2(x1))