A young boy crawling under a police barrier.
A small boy trying to get to the other side of a blocked area.
A boy may be crawling and exploring, and just because he is crawling under a barrier it does not mean he is necessarily trying to get to the other side.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & under(e1,x3) & n_barrier(x3) & of(x3,x4) & n_police(x4) & Actor(e1,x2) & v_crawl(e1) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 p1 s1 x1 x2 x3.(-(x3 = x3) & n_side(x3) & a_topic(x1) & Topic(e1,p1) & Actor(e1,x2) & v_try(e1) & exists e3 e2 x4.(to(e2,x3) & of(x3,x4) & n_area(x4) & Theme(e3,x4) & v_block(e3) & Actor(e2,x2) & v_get(e2)) & (x1 = x2) & n_boy(x1) & a_small(s1) & Theme(s1,x1))