Three people serving food outside somewhere.
Three freinds run a food booth at a music festival.
People serving food outside doesn't mean it has to be at a music festival.
exists e1 x1 x2 x3 x4.(a_topic(x1) & outside(e1,x4) & n_somewhere(x4) & Theme(e1,x3) & Actor(e1,x2) & v_serve(e1) & n_food(x3) & (x1 = x2) & n_people(x1) & card_eq_3(x1))
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x2) & Actor(e1,x1) & v_run(e1) & at(x2,x4) & n_festival(x4) & of(x4,x5) & n_music(x5) & n_booth(x2) & of(x2,x3) & n_food(x3) & n_freind(x1) & card_eq_3(x1))