[Ashley]'s son [Wayne] and son [Nicholas] went to the park together to play.
('Wayne', 'Nicholas')
[Ashley]'s son [Wayne] and son [Nicholas] went to the park together to play.
[{('Wayne', 'brother', 'Nicholas'): [('Wayne', 'mother', 'Ashley'), ('Ashley', 'son', 'Nicholas')]}]
['mother', 'son']