[Evangeline] was swimming with her sister [Marie]. [Evangeline]'s brother [Bobby] was tanning. [David] talks to her son [Bobby] every day.
('David', 'Marie')
[David] talks to her son [Bobby] every day. [Evangeline] was swimming with her sister [Marie]. [Evangeline]'s brother [Bobby] was tanning.
[{('David', 'daughter', 'Marie'): [('David', 'son', 'Bobby'), ('Bobby', 'sister', 'Marie')]}, {('Bobby', 'sister', 'Marie'): [('Bobby', 'sister', 'Evangeline'), ('Evangeline', 'sister', 'Marie')]}]
['son', 'sister', 'sister']