A group of men, in brown jumpsuits, are standing in a dark room that has buttons and seats.
The room is illuminated.
The room can't be illuminated if its dark.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(in(e1,x4) & Theme(e2,x6) & Actor(e2,x5) & v_have(e2) & subset_of(x8,x6) & n_seat(x8) & subset_of(x7,x6) & n_buttons(x7) & (x4 = x5) & n_room(x4) & a_dark(s2) & Theme(s2,x4) & Actor(e1,x1) & v_stand(e1) & in(x1,x3) & n_jumpsuit(x3) & a_brown(s1) & Theme(s1,x3) & of(x1,x2) & n_man(x2) & n_group(x1))
exists e1 x1.(n_room(x1) & Theme(e1,x1) & v_illuminate(e1))