Two men are cooking outside in a field with trees in the background.
The men are barbecuing hamburgers.
The men may be cooking some other kind of way from barbecuing. They may be cooking something other than hamburgers.
exists e1 x1 x2 x3 x4.(n_background(x4) & with(e1,x3) & in(x3,x4) & n_tree(x3) & in(e1,x2) & n_field(x2) & r_outside(e1) & Actor(e1,x1) & v_cook(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_barbecue(e1) & n_hamburger(x2))