People standing in line by a truck waiting to buy ice cream.
The vendor has run out of popsicles.
One cannot assume that the ice cream vendor has run out of popsicles.
exists e1 e2 p1 x1 x2 x3 x4.(a_topic(x1) & for(e1,e2) & Topic(e2,p1) & Actor(e2,x2) & v_wait(e2) & exists e3 x5 x6.(Theme(e3,x5) & Actor(e3,x2) & v_buy(e3) & n_cream(x5) & of(x5,x6) & n_ice(x6)) & by(e1,x4) & n_truck(x4) & in(e1,x3) & n_line(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_people(x1))
exists e1 p1 x1.(n_vendor(x1) & exists s1 x2.(of(s1,x2) & n_popsicle(x2) & Theme(s1,x1) & a_out(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_run(e1))