An elderly man plays guitar for money on the street.
A woman rides in a go kart.
The subject could be either a man or woman.
exists e1 s1 x1 x2 x3 x4.(n_street(x4) & for(e1,x3) & on(x3,x4) & n_money(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_man(x1) & a_elderly(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(in(e1,x2) & n_kart(x2) & of(x2,x3) & n_go(x3) & Actor(e1,x1) & v_ride(e1) & n_woman(x1))