Three teenagers in a subway playing around.
Some people waiting on a train.
Just because teenagers are around the subway doesn't mean they are waiting on a train.
exists e1 s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & a_around(s1) & Manner(e1,s1) & Actor(e1,x3) & v_play(e1) & (x2 = x3) & n_subway(x2) & n_teenager(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_train(x3) & Actor(e1,x2) & v_wait(e1) & (x1 = x2) & n_people(x1))