[Jerry] and his sister, [Ann], went shopping. [Ann] asked her mom [Lillian] if she wanted anything, but [Lillian] said no.
('Jerry', 'Lillian')
[Jerry] and his sister, [Ann], went shopping. [Ann] asked her mom [Lillian] if she wanted anything, but [Lillian] said no.
[{('Jerry', 'mother', 'Lillian'): [('Jerry', 'sister', 'Ann'), ('Ann', 'mother', 'Lillian')]}]
['sister', 'mother']