[Joshua] took his brother [Hugh] to Best Buy. [Hugh] was planning to buy his children, [Johnson] and [Vanetta], a new game system.
('Joshua', 'Vanetta')
[Joshua] took his brother [Hugh] to Best Buy. [Hugh] was planning to buy his children, [Johnson] and [Vanetta], a new game system.
[{('Joshua', 'niece', 'Vanetta'): [('Joshua', 'brother', 'Hugh'), ('Hugh', 'daughter', 'Vanetta')]}, {('Hugh', 'daughter', 'Vanetta'): [('Hugh', 'son', 'Johnson'), ('Johnson', 'sister', 'Vanetta')]}]
['brother', 'son', 'sister']