[Don] went with his mother Sherry to go to the mall to shop for new school clothes. They ran into Sherry's sister [Lena] while they were there. [Lynn] and her mother [Frances] were trying to decide what to buy her son [Don] for Christmas.
('Frances', 'Lena')
[Lynn] and her mother [Frances] were trying to decide what to buy her son [Don] for Christmas. [Don] went with his mother Sherry to go to the mall to shop for new school clothes. They ran into Sherry's sister [Lena] while they were there.
[{('Frances', 'daughter', 'Lena'): [('Frances', 'daughter', 'Lynn'), ('Lynn', 'sister', 'Lena')]}, {('Lynn', 'sister', 'Lena'): [('Lynn', 'son', 'Don'), ('Don', 'aunt', 'Lena')]}]
['daughter', 'son', 'aunt']