[Emily] and her brother [Milton] went to visit [Ashley]'s grandmother, [Emily].
('Milton', 'Ashley')
[Emily] and her brother [Milton] went to visit [Ashley]'s grandmother, [Emily].
[{('Milton', 'grandmother', 'Ashley'): [('Milton', 'sister', 'Emily'), ('Emily', 'grandmother', 'Ashley')]}]
['sister', 'grandmother']