[George] and his father [Clarence] went jogging by the lake. [George] took his daughter [Andrea] to the bookstore, and bought her some books from her favorite author.
('Clarence', 'Andrea')
[George] and his father [Clarence] went jogging by the lake. [George] took his daughter [Andrea] to the bookstore, and bought her some books from her favorite author.
[{('Clarence', 'granddaughter', 'Andrea'): [('Clarence', 'son', 'George'), ('George', 'daughter', 'Andrea')]}]
['son', 'daughter']