[Harold] bought a book for his son [Robert]. [Harold] decided to take his son, [Antonio], on a ski vacation. [Antonio] called his brother [Louis] on Friday because it was his birthday. [Louis] was proud of his son, [Wayne].
('Robert', 'Wayne')
[Harold] bought a book for his son [Robert]. [Harold] decided to take his son, [Antonio], on a ski vacation. [Antonio] called his brother [Louis] on Friday because it was his birthday. [Louis] was proud of his son, [Wayne].
[{('Robert', 'nephew', 'Wayne'): [('Robert', 'brother', 'Louis'), ('Louis', 'son', 'Wayne')]}, {('Robert', 'brother', 'Louis'): [('Robert', 'brother', 'Antonio'), ('Antonio', 'brother', 'Louis')]}, {('Robert', 'brother', 'Antonio'): [('Robert', 'father', 'Harold'), ('Harold', 'son', 'Antonio')]}]
['father', 'son', 'brother', 'son']