People smoking in a smoking area.
the boy was listening
The 2 sentences have nothing to do with one another. People can be smoking or a boy can be listening.
exists x1 x2 x3 x4.(a_topic(x1) & in(x1,x3) & n_area(x3) & of(x3,x4) & n_smoking(x4) & n_smoking(x1) & of(x1,x2) & n_people(x2))
exists e1 x1.(n_boy(x1) & Actor(e1,x1) & v_listen(e1))