[Wesley] gave his mother [Frances] flowers on her birthday. [Tina] and her father [Wesley] went to the park. They had a wonderful time there, feeding the ducks. [Chris] braided his sister [Tina]'s hair.
('Chris', 'Frances')
[Chris] braided his sister [Tina]'s hair. [Tina] and her father [Wesley] went to the park. They had a wonderful time there, feeding the ducks. [Wesley] gave his mother [Frances] flowers on her birthday.
[{('Chris', 'grandmother', 'Frances'): [('Chris', 'sister', 'Tina'), ('Tina', 'grandmother', 'Frances')]}, {('Tina', 'grandmother', 'Frances'): [('Tina', 'father', 'Wesley'), ('Wesley', 'mother', 'Frances')]}]
['sister', 'father', 'mother']