[James] loves to dance with his wife. Her name is [Frances]. [James] bought a dress for his daughter [David]. [Lena] and her sister [David] played golf together. [Lena] won easily.
('Frances', 'Lena')
[James] loves to dance with his wife. Her name is [Frances]. [James] bought a dress for his daughter [David]. [Lena] and her sister [David] played golf together. [Lena] won easily.
[{('Frances', 'daughter', 'Lena'): [('Frances', 'daughter', 'David'), ('David', 'sister', 'Lena')]}, {('Frances', 'daughter', 'David'): [('Frances', 'husband', 'James'), ('James', 'daughter', 'David')]}]
['husband', 'daughter', 'sister']