[David] is taking a trip to see her sister [Cindy]. [Dolores] and her mother [Lynn] attended a play at the theater. [Lynn] needed to go to the store. [Lynn] asked her sister [Cindy] for a ride.
('David', 'Dolores')
[David] is taking a trip to see her sister [Cindy]. [Lynn] needed to go to the store. [Lynn] asked her sister [Cindy] for a ride. [Dolores] and her mother [Lynn] attended a play at the theater.
[{('David', 'niece', 'Dolores'): [('David', 'sister', 'Lynn'), ('Lynn', 'daughter', 'Dolores')]}, {('David', 'sister', 'Lynn'): [('David', 'sister', 'Cindy'), ('Cindy', 'sister', 'Lynn')]}]
['sister', 'sister', 'daughter']