[George] is a great uncle of [Mary]. [Nicholas] and his daughter [Mary] are planning a trip to the mountains. They have n't been in almost 10 years.
('Nicholas', 'George')
[Nicholas] and his daughter [Mary] are planning a trip to the mountains. They have n't been in almost 10 years. [George] is a great uncle of [Mary].
[{('Nicholas', 'brother', 'George'): [('Nicholas', 'daughter', 'Mary'), ('Mary', 'uncle', 'George')]}]
['daughter', 'uncle']