Teenagers at a field playing a sport.
The teenagers are outdoors.
Teenagers playing a sport on a field are outdoors.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_sport(x3) & at(x1,x2) & n_field(x2) & n_teenager(x1))
exists p1 x1.(n_teenager(x1) & exists x2.((x1 = x2) & n_outdoors(x2)))