Mounted policeman on horseback guard the little boys in front of the palace.
police people saves the boys in before the palace.
"Guard the little boys" is a rephrasing of "saves the boys".
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_palace(x6) & a_topic(x1) & on(x1,x2) & in(x2,x5) & of(x5,x6) & n_front(x5) & n_boy(x4) & a_little(s1) & Theme(s1,x4) & (x2 = x4) & n_guard(x2) & of(x2,x3) & n_horseback(x3) & n_policeman(x1) & Theme(e1,x1) & v_mount(e1))
exists e1 s1 x1 x2 x3 x4.(n_palace(x4) & n_boy(x3) & before(e1,x4) & a_in(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_save(e1) & n_people(x1) & of(x1,x2) & n_police(x2))