[David] is looking for a good gift for her sister [Lena]. [Francisco] does n't trust just anybody to watch his daughter [Carrie] when he's away. [Francisco]'s sister [Lena] is about the only person he ever leaves his daughter with.
('David', 'Carrie')
[David] is looking for a good gift for her sister [Lena]. [Francisco] does n't trust just anybody to watch his daughter [Carrie] when he's away. [Francisco]'s sister [Lena] is about the only person he ever leaves his daughter with.
[{('David', 'niece', 'Carrie'): [('David', 'brother', 'Francisco'), ('Francisco', 'daughter', 'Carrie')]}, {('David', 'brother', 'Francisco'): [('David', 'sister', 'Lena'), ('Lena', 'brother', 'Francisco')]}]
['sister', 'brother', 'daughter']