[David] and her mother [Frances] attended a play at the theater. [Frances] baked cookies for her grandson [Thomas]. [Lynn] took her son [Thomas] to the mall to shop for school clothes.
('Lynn', 'David')
[Lynn] took her son [Thomas] to the mall to shop for school clothes. [Frances] baked cookies for her grandson [Thomas]. [David] and her mother [Frances] attended a play at the theater.
[{('Lynn', 'sister', 'David'): [('Lynn', 'mother', 'Frances'), ('Frances', 'daughter', 'David')]}, {('Lynn', 'mother', 'Frances'): [('Lynn', 'son', 'Thomas'), ('Thomas', 'grandmother', 'Frances')]}]
['son', 'grandmother', 'daughter']