[Michael] enjoys talking to his sister. Her name is [Emily]. [Emily] went out for pizza with her father [Nicholas].
('Michael', 'Nicholas')
[Michael] enjoys talking to his sister. Her name is [Emily]. [Emily] went out for pizza with her father [Nicholas].
[{('Michael', 'father', 'Nicholas'): [('Michael', 'sister', 'Emily'), ('Emily', 'father', 'Nicholas')]}]
['sister', 'father']