A man performing saxophone on the street.
The man is performing at the Opera.
Performing on the street is not the same as performing at the Opera.
exists e1 x1 x2 x3 x4.(n_street(x4) & a_topic(x1) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_perform(e1) & n_saxophone(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(ne_geo_opera(x2) & n_man(x1) & at(e1,x2) & Actor(e1,x1) & v_perform(e1))