Person smiles at child inside of playground structure.
A father smiles at his son inside a playground.
Person smiles at child doesn't mean that he is his father.
exists e1 x1 x2 x3 x4 x5.(ne_per_person(x1) & at(e1,x5) & n_child(x5) & Theme(e1,x2) & Actor(e1,x1) & v_smile(e1) & of(x2,x3) & n_structure(x3) & of(x3,x4) & n_playground(x4) & n_inside(x2))
exists e1 x1 x2 x3.(inside(e1,x3) & n_playground(x3) & at(e1,x2) & n_son(x2) & of(x2,x1) & n_male(x1) & Actor(e1,x1) & v_smile(e1) & n_father(x1))