[Alberta] took her mother, [Stephanie], out for lunch. [Stephanie]'s son, [Michael], was busy with school activities and forgot to meet his sister.
('Alberta', 'Michael')
[Alberta] took her mother, [Stephanie], out for lunch. [Stephanie]'s son, [Michael], was busy with school activities and forgot to meet his sister.
[{('Alberta', 'brother', 'Michael'): [('Alberta', 'mother', 'Stephanie'), ('Stephanie', 'son', 'Michael')]}]