[Lynn]'s son, [Don], was busy with school activities and forgot to meet his sister. [Don] and his brother [Thomas] bought new dress for their grandmother [Frances].
('Lynn', 'Frances')
[Lynn]'s son, [Don], was busy with school activities and forgot to meet his sister. [Don] and his brother [Thomas] bought new dress for their grandmother [Frances].
[{('Lynn', 'mother', 'Frances'): [('Lynn', 'son', 'Don'), ('Don', 'grandmother', 'Frances')]}, {('Don', 'grandmother', 'Frances'): [('Don', 'brother', 'Thomas'), ('Thomas', 'grandmother', 'Frances')]}]
['son', 'brother', 'grandmother']