[David] and her nephew [Charles] went to the store to buy some new tea. [David] went shopping at the mall with her mother [Frances] [Lena] loves to make cookies for her son. His name is [Charles].
('Lena', 'Frances')
[Lena] loves to make cookies for her son. His name is [Charles]. [David] and her nephew [Charles] went to the store to buy some new tea. [David] went shopping at the mall with her mother [Frances]
[{('Lena', 'mother', 'Frances'): [('Lena', 'sister', 'David'), ('David', 'mother', 'Frances')]}, {('Lena', 'sister', 'David'): [('Lena', 'son', 'Charles'), ('Charles', 'aunt', 'David')]}]
['son', 'aunt', 'mother']