[Bobby] ca n't stand his unfriendly aunt [Cindy]. [Lena] was talking about food with her sister [David]. [David] loved to care for her newborn child [Bobby].
('Lena', 'Cindy')
[Lena] was talking about food with her sister [David]. [David] loved to care for her newborn child [Bobby]. [Bobby] ca n't stand his unfriendly aunt [Cindy].
[{('Lena', 'sister', 'Cindy'): [('Lena', 'sister', 'David'), ('David', 'sister', 'Cindy')]}, {('David', 'sister', 'Cindy'): [('David', 'son', 'Bobby'), ('Bobby', 'aunt', 'Cindy')]}]
['sister', 'son', 'aunt']