[Pete], along with his sisters [Carrie] and [Wilhelmina] went to the park. [Carrie]'s grandfather [James] drove them there.
('James', 'Wilhelmina')
[Pete], along with his sisters [Carrie] and [Wilhelmina] went to the park. [Carrie]'s grandfather [James] drove them there.
[{('James', 'granddaughter', 'Wilhelmina'): [('James', 'granddaughter', 'Carrie'), ('Carrie', 'sister', 'Wilhelmina')]}, {('Carrie', 'sister', 'Wilhelmina'): [('Carrie', 'brother', 'Pete'), ('Pete', 'sister', 'Wilhelmina')]}]
['granddaughter', 'brother', 'sister']