Someone is selling food on a set of doorsteps.
A group of girl scouts sold cookies on the street.
Someone is sold cookies on the street.
exists e1 x1 x2 x3 x4.(on(e1,x3) & of(x3,x4) & n_doorstep(x4) & n_set(x3) & Theme(e1,x2) & Actor(e1,x1) & v_sell(e1) & n_food(x2) & n_person(x1))
exists e1 x1 x2 x3 x4 x5.(n_street(x5) & on(e1,x5) & Theme(e1,x4) & Actor(e1,x1) & v_sell(e1) & n_cookie(x4) & of(x1,x2) & n_scout(x2) & of(x2,x3) & n_girl(x3) & n_group(x1))