A well dressed man in a suit plays piano for the band.
A band is performing at a Bar Mitzvah.
Bands are not always performing at a Bar Mitzvah.
exists e2 e1 x1 x2 x3 x4.(n_band(x4) & for(e2,x4) & Theme(e2,x3) & Actor(e2,x1) & v_play(e2) & n_piano(x3) & in(x1,x2) & n_suit(x2) & n_man(x1) & Theme(e1,x1) & v_dress(e1) & r_well(x1))
exists e1 x1 x2 x3.(at(e1,x2) & n_mitzvah(x2) & of(x2,x3) & n_bar(x3) & Actor(e1,x1) & v_perform(e1) & n_band(x1))