[Nicholas] and his brother [George] just talked on the phone for the first time in years. [Nicholas] and his son [Michael] went to the park to look for different kinds of birds.
('Michael', 'George')
[Nicholas] and his son [Michael] went to the park to look for different kinds of birds. [Nicholas] and his brother [George] just talked on the phone for the first time in years.
[{('Michael', 'uncle', 'George'): [('Michael', 'father', 'Nicholas'), ('Nicholas', 'brother', 'George')]}]
['father', 'brother']