[Pedro] and his brother [Antonio] just talked on the phone for the first time in years. [Harold]'s son [Pedro] entered rehab for the ninth time at the age of thirty. [Tracy]'s biggest accomplishment is raising her son [Kevin]. [Antonio] ate dinner with his wife [Tracy].
('Harold', 'Kevin')
[Harold]'s son [Pedro] entered rehab for the ninth time at the age of thirty. [Pedro] and his brother [Antonio] just talked on the phone for the first time in years. [Antonio] ate dinner with his wife [Tracy]. [Tracy]'s biggest accomplishment is raising her son [Kevin].
[{('Harold', 'grandson', 'Kevin'): [('Harold', 'son', 'Antonio'), ('Antonio', 'son', 'Kevin')]}, {('Harold', 'son', 'Antonio'): [('Harold', 'son', 'Pedro'), ('Pedro', 'brother', 'Antonio')]}, {('Antonio', 'son', 'Kevin'): [('Antonio', 'wife', 'Tracy'), ('Tracy', 'son', 'Kevin')]}]
['son', 'brother', 'wife', 'son']