People are walking on the street outside of the store
People are vandalizing the store they're walking in front of.
One cannot be walking and vandalizing simultaneously.
exists e1 x1 x2 x3.(n_store(x3) & n_street(x2) & of(e1,x3) & r_outside(e1) & on(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1))
exists e1 p1 x1 x2.(n_thing(x2) & n_store(x2) & Theme(e1,x2) & Actor(e1,x1) & v_vandalize(e1) & exists e2 x3.(in(e2,x3) & r_of(x3) & n_front(x3) & Actor(e2,x2) & v_walk(e2)) & that(x2,p1) & n_people(x1))