[Jennifer] went shopping at the mall with her mother [Amy] [Jennifer] and her sister [Emily] are the only children in their family.
('Emily', 'Amy')
[Jennifer] and her sister [Emily] are the only children in their family. [Jennifer] went shopping at the mall with her mother [Amy]
[{('Emily', 'mother', 'Amy'): [('Emily', 'sister', 'Jennifer'), ('Jennifer', 'mother', 'Amy')]}]
['sister', 'mother']