A small group singing in front of a crowd outdoors.
The group of people is silent on stage.
One cannot be silent and singing at the same time.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x3) & of(x3,x4) & n_outdoors(x4) & of(x4,x5) & n_crowd(x5) & n_front(x3) & Actor(e1,x2) & v_sing(e1) & (x1 = x2) & n_group(x1) & a_small(s1) & Theme(s1,x1))
exists s1 x1 x2 x3.(n_group(x1) & on(s1,x3) & n_stage(x3) & Theme(s1,x1) & a_silent(s1) & of(x1,x2) & n_people(x2))