[Jennifer] and her brother [Michael] went to the basketball game and had a great time. [Nicole] and her brother [Wayne] were having a wonderful time at Disneyland. [Wayne] met his brother [Michael] for drinks after work. [Jennifer] bought some shoes for her father [Louis].
('Nicole', 'Louis')
[Nicole] and her brother [Wayne] were having a wonderful time at Disneyland. [Wayne] met his brother [Michael] for drinks after work. [Jennifer] and her brother [Michael] went to the basketball game and had a great time. [Jennifer] bought some shoes for her father [Louis].
[{('Nicole', 'father', 'Louis'): [('Nicole', 'brother', 'Michael'), ('Michael', 'father', 'Louis')]}, {('Nicole', 'brother', 'Michael'): [('Nicole', 'brother', 'Wayne'), ('Wayne', 'brother', 'Michael')]}, {('Michael', 'father', 'Louis'): [('Michael', 'sister', 'Jennifer'), ('Jennifer', 'father', 'Louis')]}]
['brother', 'brother', 'sister', 'father']