[David] asked her two sisters [Cindy] and [Lena] if they were free for coffee this coming weekend. [Frances] and her daughter [Lena] are entering the competition together.
('Frances', 'Cindy')
[Frances] and her daughter [Lena] are entering the competition together. [David] asked her two sisters [Cindy] and [Lena] if they were free for coffee this coming weekend.
[{('Frances', 'daughter', 'Cindy'): [('Frances', 'daughter', 'Lena'), ('Lena', 'sister', 'Cindy')]}, {('Lena', 'sister', 'Cindy'): [('Lena', 'sister', 'David'), ('David', 'sister', 'Cindy')]}]
['daughter', 'sister', 'sister']