A musician is playing a saxophone on a sidewalk.
A man sleeps under an awning
A subject cannot be playing a saxophone and also be one who sleeps at the same time.
exists e1 x1 x2 x3.(on(e1,x3) & n_sidewalk(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_saxophone(x2) & n_musician(x1))
exists e1 x1 x2.(under(e1,x2) & n_awning(x2) & Actor(e1,x1) & v_sleep(e1) & n_man(x1))