The people dressed in all white are having a good time.
The group of basketball players celebrate their recent victory.
it is not necessary they are basket players to celebrate recent victory becuase of their white dress
exists e1 e2 s1 x1 x2 x3.(n_people(x1) & Theme(e2,x3) & Actor(e2,x1) & v_have(e2) & n_time(x3) & a_good(s1) & Theme(s1,x3) & all x4.(n_white(x4) -> in(e1,x4)) & Theme(e1,x2) & v_dress(e1) & (x1 = x2))
exists e1 s1 x1 x2 x3 x4.(n_victory(x4) & a_recent(s1) & Theme(s1,x4) & of(x4,x1) & n_thing(x1) & n_group(x1) & Theme(e1,x4) & Actor(e1,x1) & v_celebrate(e1) & of(x1,x2) & n_player(x2) & of(x2,x3) & n_basketball(x3))