[Glen] asked his mother [Amy] where babies came from. [Amy] told him they came from the stork. [Dennis] loved his mother, [Amy].
('Glen', 'Dennis')
[Glen] asked his mother [Amy] where babies came from. [Amy] told him they came from the stork. [Dennis] loved his mother, [Amy].
[{('Glen', 'brother', 'Dennis'): [('Glen', 'mother', 'Amy'), ('Amy', 'son', 'Dennis')]}]
['mother', 'son']