[Don]'s mother, [Lynn], and brother, [Joseph], sat out with him on the porch to have breakfast. [Lynn] and her sister [David] braided each other's hair before school.
('David', 'Joseph')
[Lynn] and her sister [David] braided each other's hair before school. [Don]'s mother, [Lynn], and brother, [Joseph], sat out with him on the porch to have breakfast.
[{('David', 'nephew', 'Joseph'): [('David', 'sister', 'Lynn'), ('Lynn', 'son', 'Joseph')]}, {('Lynn', 'son', 'Joseph'): [('Lynn', 'son', 'Don'), ('Don', 'brother', 'Joseph')]}]
['sister', 'son', 'brother']