[Martha] abandoned her son, [Brent]. [Brent]'s grandmother, [Mary], ended up raising him as if he were her own child.
('Martha', 'Mary')
[Martha] abandoned her son, [Brent]. [Brent]'s grandmother, [Mary], ended up raising him as if he were her own child.
[{('Martha', 'mother', 'Mary'): [('Martha', 'son', 'Brent'), ('Brent', 'grandmother', 'Mary')]}]