[David] and her brother [Wesley] are taking [David]'s son [Bobby] to the park. [Wesley]'s brother, [Francisco], recently got elected as a senator.
('Francisco', 'Bobby')
[Wesley]'s brother, [Francisco], recently got elected as a senator. [David] and her brother [Wesley] are taking [David]'s son [Bobby] to the park.
[{('Francisco', 'nephew', 'Bobby'): [('Francisco', 'sister', 'David'), ('David', 'son', 'Bobby')]}, {('Francisco', 'sister', 'David'): [('Francisco', 'brother', 'Wesley'), ('Wesley', 'sister', 'David')]}]
['brother', 'sister', 'son']