Old man playing saxophone on the street.
The man is over the age of 20.
Any one called old man should be over the age of 20.
exists e1 s1 x1 x2 x3 x4.(n_street(x4) & a_topic(x1) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_saxophone(x3) & (x1 = x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists p1 x1 x2.(n_age(x2) & n_man(x1) & exists x3.(over(x1,x2) & of(x2,x3) & n_date(x3) & a_date_day_20(x3) & a_date_day_20(x3)))