A man, dressed in white, plays the piano and sings on stage.
The well dressed man was telling jokes on stage
One cannot be telling jokes and singing at the same time.
exists e2 e1 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 e2 x1 x2 x3.(n_man(x1) & Theme(e1,x1) & v_dress(e1) & r_well(x1) & on(e2,x3) & n_stage(x3) & Theme(e2,x2) & Actor(e2,x1) & v_tell(e2) & n_joke(x2))