A group of people are cleaning up the outside of a house.
Humans are volunteering to tidy up the outside of a home.
Not all people who clean up are volunteering to tidy up
exists e1 x1 x2 x3 x4.(n_outside(x3) & up(e1,x3) & of(x3,x4) & n_house(x4) & Actor(e1,x1) & v_clean(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 p1 x1 x2.(n_outside(x2) & ne_nam_humans(x1) & Topic(e1,p1) & Actor(e1,x1) & v_volunteer(e1) & exists e2 s1 x3.(a_up(s1) & Manner(e2,s1) & Theme(e2,x2) & Actor(e2,x1) & v_tidy(e2) & of(x2,x3) & n_home(x3)))