[Cindy] could n't wait to get off the plane to see her mother, [Carrie]. [Wilhelmina] and her brother [Pete] played tennis together. [Wilhelmina]'s sister [Carrie] has an injured leg and watched instead.
('Pete', 'Cindy')
[Wilhelmina] and her brother [Pete] played tennis together. [Wilhelmina]'s sister [Carrie] has an injured leg and watched instead. [Cindy] could n't wait to get off the plane to see her mother, [Carrie].
[{('Pete', 'mother', 'Cindy'): [('Pete', 'sister', 'Wilhelmina'), ('Wilhelmina', 'mother', 'Cindy')]}, {('Wilhelmina', 'mother', 'Cindy'): [('Wilhelmina', 'sister', 'Carrie'), ('Carrie', 'mother', 'Cindy')]}]
['sister', 'sister', 'mother']