[Dale]'s mother [Ashley] and son [Travis] worked together to prepare a fresh salad.
('Travis', 'Ashley')
[Dale]'s mother [Ashley] and son [Travis] worked together to prepare a fresh salad.
[{('Travis', 'grandmother', 'Ashley'): [('Travis', 'father', 'Dale'), ('Dale', 'mother', 'Ashley')]}]
['father', 'mother']