[Johnson] and his sister [Vanetta] went to the ice skating rink. [Johnson] fell down and [Vanetta] laughed at him. [Brandon] took his sister [Vanetta] out to dinner for her birthday. [David] is so happy for her son. Her son [Brandon] just joined the Army.
('Johnson', 'David')
[Johnson] and his sister [Vanetta] went to the ice skating rink. [Johnson] fell down and [Vanetta] laughed at him. [Brandon] took his sister [Vanetta] out to dinner for her birthday. [David] is so happy for her son. Her son [Brandon] just joined the Army.
[{('Johnson', 'mother', 'David'): [('Johnson', 'brother', 'Brandon'), ('Brandon', 'mother', 'David')]}, {('Johnson', 'brother', 'Brandon'): [('Johnson', 'sister', 'Vanetta'), ('Vanetta', 'brother', 'Brandon')]}]
['sister', 'brother', 'mother']