Surrounding some vegetables, a person sits on the ground and smiles.
The person is old
A person who sits on the ground need not always be old.
exists e3 e1 e2 x1 x2 x3 x4 x5.(n_ground(x4) & while(e3,e1) & Actor(e3,x5) & v_smile(e3) & n_person(x5) & while(e2,e1) & on(e2,x4) & Actor(e2,x3) & v_sit(e2) & n_person(x3) & Theme(e1,x2) & Actor(e1,x1) & v_surround(e1) & n_vegetable(x2) & n_thing(x1))
exists s1 x1.(n_person(x1) & Theme(s1,x1) & a_old(s1))