[Cindy] was trying to call her brother [Joshua]. He was busy taking care of his son [Joseph], so he did n't hear the phone ringing. [Lena] took her nephew [Joseph] to see a movie last Saturday. They had a good time.
('Cindy', 'Lena')
[Cindy] was trying to call her brother [Joshua]. He was busy taking care of his son [Joseph], so he did n't hear the phone ringing. [Lena] took her nephew [Joseph] to see a movie last Saturday. They had a good time.
[{('Cindy', 'sister', 'Lena'): [('Cindy', 'brother', 'Joshua'), ('Joshua', 'sister', 'Lena')]}, {('Joshua', 'sister', 'Lena'): [('Joshua', 'son', 'Joseph'), ('Joseph', 'aunt', 'Lena')]}]
['brother', 'son', 'aunt']