[Roy] took his granddaughter, [Regina], to see a movie. [Regina]'s sister [Gladys] cried because she could not go.
('Gladys', 'Roy')
[Roy] took his granddaughter, [Regina], to see a movie. [Regina]'s sister [Gladys] cried because she could not go.
[{('Gladys', 'grandfather', 'Roy'): [('Gladys', 'sister', 'Regina'), ('Regina', 'grandfather', 'Roy')]}]