[Clarence] was proud of his son, [Nicholas], for marrying a beautiful woman and having a kid named [Mary].
('Clarence', 'Mary')
[Clarence] was proud of his son, [Nicholas], for marrying a beautiful woman and having a kid named [Mary].
[{('Clarence', 'granddaughter', 'Mary'): [('Clarence', 'son', 'Nicholas'), ('Nicholas', 'daughter', 'Mary')]}]
['son', 'daughter']