[Theodore] made cookies with his grandma [Frances]. [Lena] drove her son [Theodore] to his soccer game. [Chris] took his mother [Lena] a new pot for her flowers.
('Chris', 'Frances')
[Chris] took his mother [Lena] a new pot for her flowers. [Lena] drove her son [Theodore] to his soccer game. [Theodore] made cookies with his grandma [Frances].
[{('Chris', 'grandmother', 'Frances'): [('Chris', 'brother', 'Theodore'), ('Theodore', 'grandmother', 'Frances')]}, {('Chris', 'brother', 'Theodore'): [('Chris', 'mother', 'Lena'), ('Lena', 'son', 'Theodore')]}]
['mother', 'son', 'grandmother']