An Asian man performing on a stage.
A man singing.
Not all people who perform on stage are singing.
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_stage(x3) & Actor(e1,x2) & v_perform(e1) & (x1 = x2) & n_man(x1) & a_asian(s1) & Theme(s1,x1))
exists x1 x2.(a_topic(x1) & n_singing(x1) & of(x1,x2) & n_man(x2))