[David] and her brother [Francisco] and sister [Lena] went fishing. [Francisco]'s son [Pete] went surfing instead.
('Pete', 'David')
[David] and her brother [Francisco] and sister [Lena] went fishing. [Francisco]'s son [Pete] went surfing instead.
[{('Pete', 'aunt', 'David'): [('Pete', 'father', 'Francisco'), ('Francisco', 'sister', 'David')]}, {('Francisco', 'sister', 'David'): [('Francisco', 'sister', 'Lena'), ('Lena', 'sister', 'David')]}]
['father', 'sister', 'sister']