[April] just recently met her father, [George]. They both love to fish and hunt. [George] bought his daughter, [Janet], flowers.
('April', 'Janet')
[April] just recently met her father, [George]. They both love to fish and hunt. [George] bought his daughter, [Janet], flowers.
[{('April', 'sister', 'Janet'): [('April', 'father', 'George'), ('George', 'daughter', 'Janet')]}]
['father', 'daughter']