[Jacob] asked his mother [Mary] where babies came from. [Mary] told him they came from the stork. [William] asked his father [Jacob] if he could borrow some money.
('William', 'Mary')
[William] asked his father [Jacob] if he could borrow some money. [Jacob] asked his mother [Mary] where babies came from. [Mary] told him they came from the stork.
[{('William', 'grandmother', 'Mary'): [('William', 'father', 'Jacob'), ('Jacob', 'mother', 'Mary')]}]