[Frances] took her granddaughter [Pamela] on a long walk during the pretty spring day. [Lena] picked her son [Chris] up from school. His sister [Pamela] was home sick with a cold.
('Lena', 'Frances')
[Lena] picked her son [Chris] up from school. His sister [Pamela] was home sick with a cold. [Frances] took her granddaughter [Pamela] on a long walk during the pretty spring day.
[{('Lena', 'mother', 'Frances'): [('Lena', 'daughter', 'Pamela'), ('Pamela', 'grandmother', 'Frances')]}, {('Lena', 'daughter', 'Pamela'): [('Lena', 'son', 'Chris'), ('Chris', 'sister', 'Pamela')]}]
['son', 'sister', 'grandmother']