A large crowd watching something while some people dance together in front of a blue stage.
There are people inside a building.
It cannot be determined that the large crowd mentioned in sentence 1 are inside a building.  There is no mention of dancing and a blue stage in sentence 2.  People are not always a large crowd.
exists e1 e2 p1 s1 s2 x1 x2 x3 x4 x5 x6.(in(e2,x5) & of(x5,x6) & n_stage(x6) & a_blue(s2) & Theme(s2,x6) & n_front(x5) & exists s3.(Theme(s3,x1) & a_together(s3)) & Topic(e2,p1) & Actor(e2,x1) & v_dance(e2) & while(e1,x4) & n_people(x4) & Theme(e1,x3) & Actor(e1,x2) & v_watch(e1) & n_thing(x3) & (x1 = x2) & n_crowd(x1) & a_large(s1) & Theme(s1,x1))
exists p1 x1 x2 x3.((x1 = x2) & inside(x2,x3) & n_building(x3) & n_people(x2))