[April]'s father is named [George]. [April] took her younger sister [Andrea] to the carnival last weekend.
('Andrea', 'George')
[April] took her younger sister [Andrea] to the carnival last weekend. [April]'s father is named [George].
[{('Andrea', 'father', 'George'): [('Andrea', 'sister', 'April'), ('April', 'father', 'George')]}]
['sister', 'father']