Two people leaf-blow a sidewalk.
these people are cleaning something
Leaf-blowing implies cleaning, and a sidewalk is considered something.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_leaf-blow(e1) & n_sidewalk(x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_clean(e1) & n_thing(x2))