[Wilhelmina] took her younger sister [Anna] to the carnival last weekend. [Anna] is one of my favorite students. She is the younger sister of [Pete], who I taught last year, [James] taught his granddaughter, [Wilhelmina], how to fish.
('Pete', 'James')
[Anna] is one of my favorite students. She is the younger sister of [Pete], who I taught last year, [Wilhelmina] took her younger sister [Anna] to the carnival last weekend. [James] taught his granddaughter, [Wilhelmina], how to fish.
[{('Pete', 'grandfather', 'James'): [('Pete', 'sister', 'Anna'), ('Anna', 'grandfather', 'James')]}, {('Anna', 'grandfather', 'James'): [('Anna', 'sister', 'Wilhelmina'), ('Wilhelmina', 'grandfather', 'James')]}]
['sister', 'sister', 'grandfather']