[Emily] wanted to go shopping and she asked her mother [Amy] to go with her. She then decided to ask her sister [Mary] to go too.
('Mary', 'Amy')
[Emily] wanted to go shopping and she asked her mother [Amy] to go with her. She then decided to ask her sister [Mary] to go too.
[{('Mary', 'mother', 'Amy'): [('Mary', 'sister', 'Emily'), ('Emily', 'mother', 'Amy')]}]
['sister', 'mother']