Four men in cowboy hats sitting at a table.
The cowboys are eating lunch.
Men do not have to be cowboys to wear cowboy hats. Sitting at  a table does not imply they are eating their lunch.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x5) & n_table(x5) & Actor(e1,x4) & v_sit(e1) & (x1 = x4) & in(x1,x2) & n_hat(x2) & of(x2,x3) & n_cowboy(x3) & n_man(x1) & card_eq_4(x1))
exists e1 x1 x2.(n_cowboy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_lunch(x2))