[David] went out to dinner with her sister [Lena], and [Lena]'s daughter [Pamela]. [Francisco], [Pamela]'s uncle, recently got into fishing.
('David', 'Francisco')
[David] went out to dinner with her sister [Lena], and [Lena]'s daughter [Pamela]. [Francisco], [Pamela]'s uncle, recently got into fishing.
[{('David', 'brother', 'Francisco'): [('David', 'sister', 'Lena'), ('Lena', 'brother', 'Francisco')]}, {('Lena', 'brother', 'Francisco'): [('Lena', 'daughter', 'Pamela'), ('Pamela', 'uncle', 'Francisco')]}]
['sister', 'daughter', 'uncle']