[James] read his daughter [Lena] a bedtime story. Soon she was fast asleep. [Lena] has a son called [Charles]. Each day they go to the park after school. [David] and her father [James] went to the park. They had a wonderful time there, feeding the ducks.
('David', 'Charles')
[David] and her father [James] went to the park. They had a wonderful time there, feeding the ducks. [James] read his daughter [Lena] a bedtime story. Soon she was fast asleep. [Lena] has a son called [Charles]. Each day they go to the park after school.
[{('David', 'nephew', 'Charles'): [('David', 'sister', 'Lena'), ('Lena', 'son', 'Charles')]}, {('David', 'sister', 'Lena'): [('David', 'father', 'James'), ('James', 'daughter', 'Lena')]}]
['father', 'daughter', 'son']