[Ashley] was busy planning her grandson's, [Douglas], birthday party. [Douglas] and his sister [Janet] went to brunch today at the new diner.
('Janet', 'Ashley')
[Douglas] and his sister [Janet] went to brunch today at the new diner. [Ashley] was busy planning her grandson's, [Douglas], birthday party.
[{('Janet', 'grandmother', 'Ashley'): [('Janet', 'brother', 'Douglas'), ('Douglas', 'grandmother', 'Ashley')]}]
['brother', 'grandmother']