A man, dressed in white, plays the piano and sings on stage.
The man on stage was signing
Sings on stage is the same as singing.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(n_sing(x6) & n_piano(x5) & subset_of(x6,x4) & subset_of(x5,x4) & on(e2,x7) & n_stage(x7) & Theme(e2,x4) & Actor(e2,x1) & v_play(e2) & Theme(e1,s1) & Theme(s1,x3) & a_white(s1) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_man(x1) & Actor(e1,x1) & v_sign(e1) & on(x1,x2) & n_stage(x2))