[Johnson] and his sister [Vanetta] stood in line at the fair. [Michael] and her brother [Brandon] were playing in the park. [Brandon] saw his sister [Vanetta] getting ice cream and wanted some too.
('Michael', 'Johnson')
[Michael] and her brother [Brandon] were playing in the park. [Brandon] saw his sister [Vanetta] getting ice cream and wanted some too. [Johnson] and his sister [Vanetta] stood in line at the fair.
[{('Michael', 'brother', 'Johnson'): [('Michael', 'brother', 'Brandon'), ('Brandon', 'brother', 'Johnson')]}, {('Brandon', 'brother', 'Johnson'): [('Brandon', 'sister', 'Vanetta'), ('Vanetta', 'brother', 'Johnson')]}]
['brother', 'sister', 'brother']