People watching a low airplane flying overhead
There are people looking at the sky.
watching a low airplane flying overhead implies they are looking at the sky.
exists e2 e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e2,x3) & Actor(e2,x2) & v_watch(e2) & Theme(e1,x5) & Actor(e1,x4) & v_fly(e1) & n_overhead(x5) & (x3 = x4) & n_airplane(x3) & a_low(s1) & Theme(s1,x3) & (x1 = x2) & n_people(x1))
exists p1 x1 x4.(n_sky(x4) & exists e1 x2 x3.((x1 = x2) & at(e1,x4) & Actor(e1,x3) & v_look(e1) & (x2 = x3) & n_people(x2)))