[Francisco] and his sister [Lena] went to the park. [Charles] loves playing hide and seek with his grandfather [James]. [Lena] has a son named [Charles].
('Francisco', 'James')
[Francisco] and his sister [Lena] went to the park. [Lena] has a son named [Charles]. [Charles] loves playing hide and seek with his grandfather [James].
[{('Francisco', 'father', 'James'): [('Francisco', 'sister', 'Lena'), ('Lena', 'father', 'James')]}, {('Lena', 'father', 'James'): [('Lena', 'son', 'Charles'), ('Charles', 'grandfather', 'James')]}]
['sister', 'son', 'grandfather']