[Ronald] and his brother [Allan] are fighting again. [Robert] went out for pizza with his daughter [Michelle] and his brother [Pedro]. [Michelle] does n't like her brother [Allan].
('Pedro', 'Ronald')
[Robert] went out for pizza with his daughter [Michelle] and his brother [Pedro]. [Michelle] does n't like her brother [Allan]. [Ronald] and his brother [Allan] are fighting again.
[{('Pedro', 'nephew', 'Ronald'): [('Pedro', 'brother', 'Robert'), ('Robert', 'son', 'Ronald')]}, {('Robert', 'son', 'Ronald'): [('Robert', 'daughter', 'Michelle'), ('Michelle', 'brother', 'Ronald')]}, {('Michelle', 'brother', 'Ronald'): [('Michelle', 'brother', 'Allan'), ('Allan', 'brother', 'Ronald')]}]
['brother', 'daughter', 'brother', 'brother']