[Chris] likes to go fishing with his sister. Her name is [Martha]. [Lena] drove her son [Chris] to his soccer game. [Cindy] is getting married. She is looking forward to her sister, [Lena], attending. They have n't seen each other since [Lena] relocated to California with her husband 3 years ago.
('Cindy', 'Martha')
[Cindy] is getting married. She is looking forward to her sister, [Lena], attending. They have n't seen each other since [Lena] relocated to California with her husband 3 years ago. [Lena] drove her son [Chris] to his soccer game. [Chris] likes to go fishing with his sister. Her name is [Martha].
[{('Cindy', 'niece', 'Martha'): [('Cindy', 'sister', 'Lena'), ('Lena', 'daughter', 'Martha')]}, {('Lena', 'daughter', 'Martha'): [('Lena', 'son', 'Chris'), ('Chris', 'sister', 'Martha')]}]
['sister', 'son', 'sister']