[Ashley] and her husband [Clarence] took her grandson [Milton] to the park yesterday to have a picnic.
('Clarence', 'Milton')
[Ashley] and her husband [Clarence] took her grandson [Milton] to the park yesterday to have a picnic.
[{('Clarence', 'grandson', 'Milton'): [('Clarence', 'wife', 'Ashley'), ('Ashley', 'grandson', 'Milton')]}]
['wife', 'grandson']