A group of girls are changing in the dressing rom.
Some girls are reading in a library.
One cannot be reading in the library at the same time as they are changing in a dressing room
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 e1 x1 x2.(in(e1,x2) & n_library(x2) & Actor(e1,x1) & v_read(e1) & n_girl(x1))