[Nicholas] and his sister [Nancy] went to the ice skating rink. [Nicholas] fell down and [Nancy] laughed at him. [Louise] adores her daughter [Nancy]. [Nancy] loves her very much, too.
('Nicholas', 'Louise')
[Nicholas] and his sister [Nancy] went to the ice skating rink. [Nicholas] fell down and [Nancy] laughed at him. [Louise] adores her daughter [Nancy]. [Nancy] loves her very much, too.
[{('Nicholas', 'niece', 'Louise'): [('Nicholas', 'sister', 'Nancy'), ('Nancy', 'daughter', 'Louise')]}]
['sister', 'daughter']