[Helen]'s sister, [Michelle], recently started acting. [Michelle] asked her brother [Matthew] if he wanted to go to the skating rink. [Matthew] saw his younger sister [Katherine] crying because she wanted to skate too, but could n't with her broken leg.
('Katherine', 'Helen')
[Michelle] asked her brother [Matthew] if he wanted to go to the skating rink. [Matthew] saw his younger sister [Katherine] crying because she wanted to skate too, but could n't with her broken leg. [Helen]'s sister, [Michelle], recently started acting.
[{('Katherine', 'sister', 'Helen'): [('Katherine', 'brother', 'Matthew'), ('Matthew', 'sister', 'Helen')]}, {('Matthew', 'sister', 'Helen'): [('Matthew', 'sister', 'Michelle'), ('Michelle', 'sister', 'Helen')]}]