[Harold] and his son [Louis] went to the store to by bread. Brothers [Antonio] and [Louis] took [Antonio]'s wife [Tracy] and her son [Bernardo] on a big fancy cruise.
('Harold', 'Bernardo')
[Harold] and his son [Louis] went to the store to by bread. Brothers [Antonio] and [Louis] took [Antonio]'s wife [Tracy] and her son [Bernardo] on a big fancy cruise.
[{('Harold', 'grandson', 'Bernardo'): [('Harold', 'son', 'Antonio'), ('Antonio', 'son', 'Bernardo')]}, {('Antonio', 'son', 'Bernardo'): [('Antonio', 'wife', 'Tracy'), ('Tracy', 'son', 'Bernardo')]}, {('Harold', 'son', 'Antonio'): [('Harold', 'son', 'Louis'), ('Louis', 'brother', 'Antonio')]}]
['son', 'brother', 'wife', 'son']