People are standing on a sidewalk, beneath a tree, waiting for a bus.
People wait for a bus.
Waiting for a bus is same as wait for a bus.
exists e1 e2 x1 x2 x3 x4.(for(e1,e2) & for(e2,x4) & n_bus(x4) & Actor(e2,x1) & v_wait(e2) & beneath(e1,x3) & n_tree(x3) & on(e1,x2) & n_sidewalk(x2) & Actor(e1,x1) & v_stand(e1) & n_people(x1))
exists e1 x1 x2.(for(e1,x2) & n_bus(x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))