[David] and her sister [Lena] braided each other's hair before school. [Joshua] and his brother [Francisco] are very close. [Francisco] does not get along well with his sister [Lena].
('Joshua', 'David')
[Joshua] and his brother [Francisco] are very close. [Francisco] does not get along well with his sister [Lena]. [David] and her sister [Lena] braided each other's hair before school.
[{('Joshua', 'sister', 'David'): [('Joshua', 'sister', 'Lena'), ('Lena', 'sister', 'David')]}, {('Joshua', 'sister', 'Lena'): [('Joshua', 'brother', 'Francisco'), ('Francisco', 'sister', 'Lena')]}]
['brother', 'sister', 'sister']