[Nicholas] went to visit his sister [Lillian] to the hospital last week. [Lillian]'s biggest accomplishment is raising her son [Timothy].
('Nicholas', 'Timothy')
[Nicholas] went to visit his sister [Lillian] to the hospital last week. [Lillian]'s biggest accomplishment is raising her son [Timothy].
[{('Nicholas', 'nephew', 'Timothy'): [('Nicholas', 'sister', 'Lillian'), ('Lillian', 'son', 'Timothy')]}]
['sister', 'son']