[Ashley] has an amazing son. Her son [Nicholas] is very talented. [Nicholas] and his son [Glen] went to the park to look for different kinds of birds.
('Glen', 'Ashley')
[Nicholas] and his son [Glen] went to the park to look for different kinds of birds. [Ashley] has an amazing son. Her son [Nicholas] is very talented.
[{('Glen', 'grandmother', 'Ashley'): [('Glen', 'father', 'Nicholas'), ('Nicholas', 'mother', 'Ashley')]}]
['father', 'mother']