A boy runs through the sand.
A child moving fast
A boy is a male child, and to run implies to be moving fast.
exists e1 x1 x2.(n_sand(x2) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_boy(x1))
exists e1 s1 x1 x2.(a_topic(x1) & a_fast(s1) & Manner(e1,s1) & Actor(e1,x2) & v_move(e1) & (x1 = x2) & n_child(x1))