[Glen] visited his aunt [Theresa]. [Amy] sat anxiously in the airport terminal, waiting to see her son [Glen] walk through the gate.
('Amy', 'Theresa')
[Amy] sat anxiously in the airport terminal, waiting to see her son [Glen] walk through the gate. [Glen] visited his aunt [Theresa].
[{('Amy', 'sister', 'Theresa'): [('Amy', 'son', 'Glen'), ('Glen', 'aunt', 'Theresa')]}]
['son', 'aunt']