[Bobby] and his wife [Vanetta] went to a lovely anniversary dinner. [Marie] was n't sure what to buy her brother [Bobby] for his birthday. She decided to ask her mother, [David], for some advice.
('Vanetta', 'David')
[Bobby] and his wife [Vanetta] went to a lovely anniversary dinner. [Marie] was n't sure what to buy her brother [Bobby] for his birthday. She decided to ask her mother, [David], for some advice.
[{('Vanetta', 'mother-in-law', 'David'): [('Vanetta', 'husband', 'Bobby'), ('Bobby', 'mother', 'David')]}, {('Bobby', 'mother', 'David'): [('Bobby', 'sister', 'Marie'), ('Marie', 'mother', 'David')]}]
['husband', 'sister', 'mother']