A group of girls are changing in the dressing rom.
Some girls are in a dressing room.
"A group of girls " means the same as "Some girls "
exists e1 x1 x2 x3 x4.(n_rom(x3) & of(x3,x4) & n_dressing(x4) & in(e1,x3) & Actor(e1,x1) & v_change(e1) & of(x1,x2) & n_girl(x2) & n_group(x1))
exists p1 x1.(exists x2 x3.(in(x1,x2) & n_room(x2) & of(x2,x3) & n_dressing(x3)) & n_girl(x1))