[Hugh] was delighted to watch his son [Michael] steal third base in the Championship baseball game. [Hugh] and his wife [David] decided not to have kids. [Michael] spent the day with his aunt, [Lena]. They had a wonderful time doing all sorts of things.
('David', 'Lena')
[Hugh] and his wife [David] decided not to have kids. [Hugh] was delighted to watch his son [Michael] steal third base in the Championship baseball game. [Michael] spent the day with his aunt, [Lena]. They had a wonderful time doing all sorts of things.
[{('David', 'sister', 'Lena'): [('David', 'son', 'Michael'), ('Michael', 'aunt', 'Lena')]}, {('David', 'son', 'Michael'): [('David', 'husband', 'Hugh'), ('Hugh', 'son', 'Michael')]}]
['husband', 'son', 'aunt']