[Charlotte] visited her brother [Travis] in New York. His sister [June] was there too.
('June', 'Charlotte')
[Charlotte] visited her brother [Travis] in New York. His sister [June] was there too.
[{('June', 'sister', 'Charlotte'): [('June', 'brother', 'Travis'), ('Travis', 'sister', 'Charlotte')]}]
['brother', 'sister']