[George] is taking his son [Douglas] on a camping trip for the weekend. [George]'s mother, [Ashley], was worried about him. He had n't been eating.
('Douglas', 'Ashley')
[George] is taking his son [Douglas] on a camping trip for the weekend. [George]'s mother, [Ashley], was worried about him. He had n't been eating.
[{('Douglas', 'grandmother', 'Ashley'): [('Douglas', 'father', 'George'), ('George', 'mother', 'Ashley')]}]
['father', 'mother']