A group of people are standing at the front of the room, preparing to sing.
There are people standing.
Some people are standing near the room to sing.
exists e1 e2 p1 x1 x2 x3 x4.(n_room(x4) & n_front(x3) & for(e1,e2) & Topic(e2,p1) & Actor(e2,x1) & v_prepare(e2) & exists e3.(Actor(e3,x1) & v_sing(e3)) & at(e1,x3) & of(x3,x4) & Actor(e1,x1) & v_stand(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists p1 x1 e1 x2 x3.((x1 = x2) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & n_people(x2))