Several people standing and sitting in a classroom or meeting room.
People are at the pool.
There is not a pool in a classroom.
exists e1 e2 s1 x1 x2 x3 x4.(a_topic(x1) & in(e2,x4) & (n_classroom(x4) | exists x5.(n_room(x4) & of(x4,x5) & n_meeting(x5))) & Actor(e2,x3) & v_sit(e2) & (x1 = x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists p1 x1 x2.(n_pool(x2) & at(x1,x2) & n_people(x1))