One day [Milton] was hanging out with his mother [Amy] when the phone rang. [Amy] answered the phone and spoke to her mother [Ashley]. They spoke for a few minutes then hung up the phone.
('Milton', 'Ashley')
One day [Milton] was hanging out with his mother [Amy] when the phone rang. [Amy] answered the phone and spoke to her mother [Ashley]. They spoke for a few minutes then hung up the phone.
[{('Milton', 'grandmother', 'Ashley'): [('Milton', 'mother', 'Amy'), ('Amy', 'mother', 'Ashley')]}]
['mother', 'mother']