Two individuals are working a food booth.
The two workers are talking.
The individuals might not be workers. Working a food booth does not mean they are talking.
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_work(e1) & n_booth(x2) & of(x2,x3) & n_food(x3) & n_individual(x1) & card_eq_2(x1))
exists e1 x1.(n_worker(x1) & card_eq_2(x1) & Actor(e1,x1) & v_talk(e1))