Some people walk past a large billboard.
Some people walk past a high structure containing adverntisements.
Billboard is a high structure containing advertisements.
exists e1 s1 x1 x2.(past(e1,x2) & n_billboard(x2) & a_large(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1))
exists e2 e1 s1 x1 x2 x3 x4.(past(e1,x2) & Theme(e2,x4) & Actor(e2,x3) & v_contain(e2) & n_adverntisement(x4) & (x2 = x3) & n_structure(x2) & a_high(s1) & Theme(s1,x2) & Actor(e1,x1) & v_walk(e1) & n_people(x1))