[Amy] is the mother of a son named [Michael]. [George] took his sister [Amy] out to dinner for her birthday.
('Michael', 'George')
[Amy] is the mother of a son named [Michael]. [George] took his sister [Amy] out to dinner for her birthday.
[{('Michael', 'uncle', 'George'): [('Michael', 'mother', 'Amy'), ('Amy', 'brother', 'George')]}]
['mother', 'brother']