People watch as something lights up the sky.
The people are sleeping in bed.
People cannot watch while they're sleeping.
exists e1 x1 x2 x3 x4.(n_sky(x3) & as(e1,x4) & n_thing(x4) & Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & up(x2,x3) & n_light(x2) & n_people(x1))
exists e1 x1 x2.(n_people(x1) & in(e1,x2) & n_bed(x2) & Actor(e1,x1) & v_sleep(e1))