[John] and his mother, [Lillian], planted a garden for his grandmother [Ashley].
('Lillian', 'Ashley')
[John] and his mother, [Lillian], planted a garden for his grandmother [Ashley].
[{('Lillian', 'mother', 'Ashley'): [('Lillian', 'son', 'John'), ('John', 'grandmother', 'Ashley')]}]
['son', 'grandmother']