[Lillian]'s son, [John], went away for the weekend. He was going to spend it at his grandmother [Ashley]'s house.
('Lillian', 'Ashley')
[Lillian]'s son, [John], went away for the weekend. He was going to spend it at his grandmother [Ashley]'s house.
[{('Lillian', 'mother', 'Ashley'): [('Lillian', 'son', 'John'), ('John', 'grandmother', 'Ashley')]}]
['son', 'grandmother']