[James] bought his sister [Rebecca] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Pedro] and his wife [Dorothy] made promise to help their son [Jeffrey]. [Jeffrey]'s brother [James] is willing to help to.
('Dorothy', 'Rebecca')
[Pedro] and his wife [Dorothy] made promise to help their son [Jeffrey]. [Jeffrey]'s brother [James] is willing to help to. [James] bought his sister [Rebecca] a video game for her birthday. She said it was her favorite game and gave him a big hug.
[{('Dorothy', 'daughter', 'Rebecca'): [('Dorothy', 'son', 'Jeffrey'), ('Jeffrey', 'sister', 'Rebecca')]}, {('Jeffrey', 'sister', 'Rebecca'): [('Jeffrey', 'father', 'Pedro'), ('Pedro', 'daughter', 'Rebecca')]}, {('Pedro', 'daughter', 'Rebecca'): [('Pedro', 'son', 'James'), ('James', 'sister', 'Rebecca')]}]
['son', 'father', 'son', 'sister']