Man playing accordion at night by city traffic.
The man plays accordion.
Both men are playing the accordion.
exists x1 x2 x3 x4 x5 x6.(a_topic(x1) & at(x1,x4) & by(x4,x5) & n_traffic(x5) & of(x5,x6) & n_city(x6) & n_night(x4) & n_accordion(x1) & of(x1,x3) & n_playing(x3) & of(x1,x2) & n_man(x2))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_accordion(x2))