[Robert] and his brother [Louis] went to the arcade. They had a wonderful time. [Allan] has a hard time talking to his father [Robert] and his sister [Michelle] because they are both stubborn. [Michelle] says she takes after her grandfather, [Harold].
('Louis', 'Harold')
[Robert] and his brother [Louis] went to the arcade. They had a wonderful time. [Allan] has a hard time talking to his father [Robert] and his sister [Michelle] because they are both stubborn. [Michelle] says she takes after her grandfather, [Harold].
[{('Louis', 'father', 'Harold'): [('Louis', 'brother', 'Robert'), ('Robert', 'father', 'Harold')]}, {('Robert', 'father', 'Harold'): [('Robert', 'daughter', 'Michelle'), ('Michelle', 'grandfather', 'Harold')]}, {('Robert', 'daughter', 'Michelle'): [('Robert', 'son', 'Allan'), ('Allan', 'sister', 'Michelle')]}]
['brother', 'son', 'sister', 'grandfather']