[Lena] and her sister [David] braided each other's hair before school. [David] took her daughter [Vanetta] to see her very first ballet performance. [James] took his daughter [Lena] to softball practie.
('Vanetta', 'James')
[David] took her daughter [Vanetta] to see her very first ballet performance. [Lena] and her sister [David] braided each other's hair before school. [James] took his daughter [Lena] to softball practie.
[{('Vanetta', 'grandfather', 'James'): [('Vanetta', 'mother', 'David'), ('David', 'father', 'James')]}, {('David', 'father', 'James'): [('David', 'sister', 'Lena'), ('Lena', 'father', 'James')]}]
['mother', 'sister', 'father']