A boy cleaning up garbage
The boy working in the garbage.
Just because the boy is in the garbage does not mean they are working in the garbage.
exists e1 s1 x1 x2 x3.(a_topic(x1) & a_up(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_clean(e1) & n_garbage(x3) & (x1 = x2) & n_boy(x1))
exists e1 x1 x2 x3.(n_garbage(x3) & n_boy(x1) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_work(e1) & (x1 = x2))