[Allan] bought his sister [Michelle] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Marie] invited her brother [Pedro] to her daughter [Michelle]'s engagement party. [Robert]'s son, [Allan], was ill and needed to be picked up at school. [Robert] hurried to his side.
('Robert', 'Pedro')
[Robert]'s son, [Allan], was ill and needed to be picked up at school. [Robert] hurried to his side. [Allan] bought his sister [Michelle] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Marie] invited her brother [Pedro] to her daughter [Michelle]'s engagement party.
[{('Robert', 'brother', 'Pedro'): [('Robert', 'daughter', 'Michelle'), ('Michelle', 'uncle', 'Pedro')]}, {('Michelle', 'uncle', 'Pedro'): [('Michelle', 'mother', 'Marie'), ('Marie', 'brother', 'Pedro')]}, {('Robert', 'daughter', 'Michelle'): [('Robert', 'son', 'Allan'), ('Allan', 'sister', 'Michelle')]}]
['son', 'sister', 'mother', 'brother']