People working in a kitchen preparing food.
volunteers are trying to feed the homeless
They aren't necessarily volunteers if they are working in a kitchen.
exists e2 e1 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x3) & Theme(e2,x5) & Actor(e2,x4) & v_prepare(e2) & n_food(x5) & (x3 = x4) & n_kitchen(x3) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_people(x1))
exists e1 p1 x1 x2.(n_homeless(x2) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_feed(e2)) & n_volunteer(x1))