[Hugh] and his wife [David] went hiking with their daughter [Vanetta]. [Vanetta]'s brother [Michael] does n't like hiking and stayed home.
('David', 'Michael')
[Hugh] and his wife [David] went hiking with their daughter [Vanetta]. [Vanetta]'s brother [Michael] does n't like hiking and stayed home.
[{('David', 'son', 'Michael'): [('David', 'daughter', 'Vanetta'), ('Vanetta', 'brother', 'Michael')]}, {('Vanetta', 'brother', 'Michael'): [('Vanetta', 'father', 'Hugh'), ('Hugh', 'son', 'Michael')]}]
['daughter', 'father', 'son']