[Theresa] paid for her sister [Amy] and her father [Clarence] to go on a cruise to the Bahamas last spring.
('Clarence', 'Amy')
[Theresa] paid for her sister [Amy] and her father [Clarence] to go on a cruise to the Bahamas last spring.
[{('Clarence', 'daughter', 'Amy'): [('Clarence', 'daughter', 'Theresa'), ('Theresa', 'sister', 'Amy')]}]
['daughter', 'sister']