[Hugh] and his brother [Joshua] are very close. [Joshua] does not get along well with his sister [David]. [Lena] is a woman with a sister named [David].
('Hugh', 'Lena')
[Hugh] and his brother [Joshua] are very close. [Joshua] does not get along well with his sister [David]. [Lena] is a woman with a sister named [David].
[{('Hugh', 'sister', 'Lena'): [('Hugh', 'brother', 'Joshua'), ('Joshua', 'sister', 'Lena')]}, {('Joshua', 'sister', 'Lena'): [('Joshua', 'sister', 'David'), ('David', 'sister', 'Lena')]}]
['brother', 'sister', 'sister']