[Ann] asked her father [George] if she could spend the night at her friend's house. [Ann] and [Jerry] had a picnic at the park. They had sandwiches and salad.
('Jerry', 'George')
[Ann] and [Jerry] had a picnic at the park. They had sandwiches and salad. [Ann] asked her father [George] if she could spend the night at her friend's house.
[{('Jerry', 'father', 'George'): [('Jerry', 'sister', 'Ann'), ('Ann', 'father', 'George')]}]
['sister', 'father']