[Rosetta] asked her brother [Travis] if he wanted to go to the skating rink. [Travis] saw his younger sister [Charlotte] crying because she wanted to skate too, but could n't with her broken leg.
('Charlotte', 'Rosetta')
[Rosetta] asked her brother [Travis] if he wanted to go to the skating rink. [Travis] saw his younger sister [Charlotte] crying because she wanted to skate too, but could n't with her broken leg.
[{('Charlotte', 'sister', 'Rosetta'): [('Charlotte', 'brother', 'Travis'), ('Travis', 'sister', 'Rosetta')]}]
['brother', 'sister']