[Lynn] took her daughter [Andrea] to the movies. [Andrea]'s brother [Clarence] was glad because he had the house all to himself finally. [David] is getting married. She is looking forward to her sister, [Lynn], attending. They have n't seen each other since [Lynn] relocated to California with her husband 3 years ago.
('David', 'Clarence')
[David] is getting married. She is looking forward to her sister, [Lynn], attending. They have n't seen each other since [Lynn] relocated to California with her husband 3 years ago. [Lynn] took her daughter [Andrea] to the movies. [Andrea]'s brother [Clarence] was glad because he had the house all to himself finally.
[{('David', 'nephew', 'Clarence'): [('David', 'sister', 'Lynn'), ('Lynn', 'son', 'Clarence')]}, {('Lynn', 'son', 'Clarence'): [('Lynn', 'daughter', 'Andrea'), ('Andrea', 'brother', 'Clarence')]}]
['sister', 'daughter', 'brother']