[Wayne]'s son, [Kevin], and his mother, [Ashley], spent a nice day at the river looking for pretty rocks.
('Kevin', 'Ashley')
[Wayne]'s son, [Kevin], and his mother, [Ashley], spent a nice day at the river looking for pretty rocks.
[{('Kevin', 'grandmother', 'Ashley'): [('Kevin', 'father', 'Wayne'), ('Wayne', 'mother', 'Ashley')]}]
['father', 'mother']