A group of people stand on a stage and hold colorful buckets.
A group of actors performing a serious play.
Just because, a group of people stand on a stage does not imply that they are performing a serious play.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(Theme(e2,x6) & Actor(e2,x4) & v_hold(e2) & n_bucket(x6) & a_colorful(s1) & Theme(s1,x6) & of(x4,x5) & n_people(x5) & n_group(x4) & on(e1,x3) & n_stage(x3) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_perform(e1) & n_play(x4) & a_serious(s1) & Theme(s1,x4) & (x2 = x3) & n_actor(x2) & n_group(x1))