[John]'s mother [Lillian] secretly put money away for him to go on a trip next fall. [Lillian] is taking a trip to see her sister [Theresa].
('John', 'Theresa')
[John]'s mother [Lillian] secretly put money away for him to go on a trip next fall. [Lillian] is taking a trip to see her sister [Theresa].
[{('John', 'aunt', 'Theresa'): [('John', 'mother', 'Lillian'), ('Lillian', 'sister', 'Theresa')]}]
['mother', 'sister']