Group showing books they received at event.
The group is sleeping.
Showing books is hard while sleeping.
exists e1 e2 s1 x1 x2 x3 x4.(ne_org_group(s1) & a_topic(s1) & Theme(e2,x2) & Actor(e2,x1) & v_show(e2) & at(e1,x4) & n_event(x4) & Theme(e1,x3) & Actor(e1,x2) & v_receive(e1) & (x2 = x3) & n_thing(x2) & n_book(x2) & (s1 = x1))
exists e1 x1.(n_group(x1) & Actor(e1,x1) & v_sleep(e1))