[Pedro] and [Robert] are brothers. they like to spend time together [Dorothy] sat anxiously in the airport terminal, waiting to see her son [Jeffrey] walk through the gate. [James] and [Jeffrey] are brothers who look nothing alike. [Pedro] and his wife [Dorothy] are newlyweds. They are on their honeymoon, having a wonderful time.
('Robert', 'James')
[Pedro] and [Robert] are brothers. they like to spend time together [Pedro] and his wife [Dorothy] are newlyweds. They are on their honeymoon, having a wonderful time. [Dorothy] sat anxiously in the airport terminal, waiting to see her son [Jeffrey] walk through the gate. [James] and [Jeffrey] are brothers who look nothing alike.
[{('Robert', 'nephew', 'James'): [('Robert', 'brother', 'Pedro'), ('Pedro', 'son', 'James')]}, {('Pedro', 'son', 'James'): [('Pedro', 'son', 'Jeffrey'), ('Jeffrey', 'brother', 'James')]}, {('Pedro', 'son', 'Jeffrey'): [('Pedro', 'wife', 'Dorothy'), ('Dorothy', 'son', 'Jeffrey')]}]
['brother', 'wife', 'son', 'brother']