A crew cleans up trash in outdoor area.
Prisoners are cleaning up a park.
the crew may or may not be prisoners and they could be cleaning up any outdoor area not just a park.
exists e1 s1 s2 x1 x2 x3.(in(e1,x3) & n_area(x3) & a_outdoor(s2) & Theme(s2,x3) & a_up(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_clean(e1) & n_trash(x2) & n_crew(x1))
exists e1 s1 x1 x2.(a_up(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_clean(e1) & n_park(x2) & n_prisoner(x1))