[Milton] asked his mother [Amy] if she could read him a story. She was busy, but [Ashley], [Amy]'s mother, was able to read to [Milton] instead.
('Milton', 'Ashley')
[Milton] asked his mother [Amy] if she could read him a story. She was busy, but [Ashley], [Amy]'s mother, was able to read to [Milton] instead.
[{('Milton', 'grandmother', 'Ashley'): [('Milton', 'mother', 'Amy'), ('Amy', 'mother', 'Ashley')]}]
['mother', 'mother']