[David] and her mother [Frances] attended a play at the theater. [Lena] is a lovely mother. She has a son named [Charles], who she loves infinitely. [Lena] took her mother, [Frances], out for lunch.
('Charles', 'David')
[Lena] is a lovely mother. She has a son named [Charles], who she loves infinitely. [Lena] took her mother, [Frances], out for lunch. [David] and her mother [Frances] attended a play at the theater.
[{('Charles', 'aunt', 'David'): [('Charles', 'mother', 'Lena'), ('Lena', 'sister', 'David')]}, {('Lena', 'sister', 'David'): [('Lena', 'mother', 'Frances'), ('Frances', 'daughter', 'David')]}]
['mother', 'mother', 'daughter']