[Clarence] and his daughter [Lillian] went to the store. [Lillian]'s child, [Janet] was already there waiting for them.
('Janet', 'Clarence')
[Clarence] and his daughter [Lillian] went to the store. [Lillian]'s child, [Janet] was already there waiting for them.
[{('Janet', 'grandfather', 'Clarence'): [('Janet', 'mother', 'Lillian'), ('Lillian', 'father', 'Clarence')]}]
['mother', 'father']