[Michael]'s sister, [Mary], participated in the dance contest. [Mary] has a great relationship with her father [Nicholas].
('Michael', 'Nicholas')
[Michael]'s sister, [Mary], participated in the dance contest. [Mary] has a great relationship with her father [Nicholas].
[{('Michael', 'father', 'Nicholas'): [('Michael', 'sister', 'Mary'), ('Mary', 'father', 'Nicholas')]}]
['sister', 'father']