Four teenagers standing next to a bus and talking and laughing.
Some teenagers are outside a school bus as they talk and laugh.
Not every bus is a school bus.
exists e3 e2 e1 x1 x2 x3 x4.(Actor(e3,x4) & v_laugh(e3) & n_teenager(x4) & card_eq_4(x4) & Actor(e2,x3) & v_talk(e2) & n_teenager(x3) & card_eq_4(x3) & to(e1,x2) & n_bus(x2) & r_next(e1) & Actor(e1,x1) & v_stand(e1) & n_teenager(x1) & card_eq_4(x1))
exists p1 p2 x1.(exists e2 e1.(Actor(e2,x1) & v_laugh(e2) & Actor(e1,x1) & v_talk(e1)) & n_thing(x1) & as(p1,p2) & exists x2 x3.(outside(x1,x2) & n_bus(x2) & of(x2,x3) & n_school(x3)) & n_teenager(x1))