a few children are sitting down reading
The child is running.
The child can either sitting down or running at a time.
exists e1 s1 s2 x1 x2.(a_down(s2) & Manner(e1,s2) & Theme(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_reading(x2) & n_child(x1) & a_few(s1) & Theme(s1,x1))
exists e1 x1.(n_child(x1) & Actor(e1,x1) & v_run(e1))