[Clarence] is proud of his grandduaghter [Janet], and her brother [Douglas].
('Clarence', 'Douglas')
[Clarence] is proud of his grandduaghter [Janet], and her brother [Douglas].
[{('Clarence', 'grandson', 'Douglas'): [('Clarence', 'granddaughter', 'Janet'), ('Janet', 'brother', 'Douglas')]}]
['granddaughter', 'brother']