[Robert] is so proud of his son. [Ronald] is the son's name. [Samuel] often goes out for lunch with his sister, [Jennifer]. [Beverly] and her nephew [Ronald] played the piano together. [Beverly]'s son, [Samuel], recently started a pawn shop.
('Robert', 'Jennifer')
[Robert] is so proud of his son. [Ronald] is the son's name. [Beverly] and her nephew [Ronald] played the piano together. [Beverly]'s son, [Samuel], recently started a pawn shop. [Samuel] often goes out for lunch with his sister, [Jennifer].
[{('Robert', 'niece', 'Jennifer'): [('Robert', 'sister', 'Beverly'), ('Beverly', 'daughter', 'Jennifer')]}, {('Robert', 'sister', 'Beverly'): [('Robert', 'son', 'Ronald'), ('Ronald', 'aunt', 'Beverly')]}, {('Beverly', 'daughter', 'Jennifer'): [('Beverly', 'son', 'Samuel'), ('Samuel', 'sister', 'Jennifer')]}]
['son', 'aunt', 'son', 'sister']