A man, dressed in white, plays the piano and sings on stage.
The man was an expert.
Being dressed in white does not imply being an expert.
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 p1 x1.(n_man(x1) & exists x2.((x1 = x2) & n_expert(x2)))