[Michael] and his sister [Emily] went to the park. [Emily] is n't very close to her grandfather, [Clarence]. They're like strangers.
('Michael', 'Clarence')
[Michael] and his sister [Emily] went to the park. [Emily] is n't very close to her grandfather, [Clarence]. They're like strangers.
[{('Michael', 'grandfather', 'Clarence'): [('Michael', 'sister', 'Emily'), ('Emily', 'grandfather', 'Clarence')]}]
['sister', 'grandfather']