A man singing in a band.
A man singing in the audience.
A man in the audience is unlikely to be in a band.
exists e1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_band(x3) & Actor(e1,x2) & v_sing(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2 x3.(n_audience(x3) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_sing(e1) & (x1 = x2) & n_man(x1))