[Ashley] was so happy when her grandson [John] was born. [Lillian]'s son, [John], was busy with school activities and forgot to meet his sister.
('Lillian', 'Ashley')
[Lillian]'s son, [John], was busy with school activities and forgot to meet his sister. [Ashley] was so happy when her grandson [John] was born.
[{('Lillian', 'mother', 'Ashley'): [('Lillian', 'son', 'John'), ('John', 'grandmother', 'Ashley')]}]
['son', 'grandmother']