[Lynn] and her sister [Lena] are going to the movies. [Thomas] is staying home, but ca n't wait until his mother [Lynn] gets back. [Hugh] has a brother who is younger than him. The brother has a sister whose name is [Lena].
('Hugh', 'Thomas')
[Hugh] has a brother who is younger than him. The brother has a sister whose name is [Lena]. [Lynn] and her sister [Lena] are going to the movies. [Thomas] is staying home, but ca n't wait until his mother [Lynn] gets back.
[{('Hugh', 'nephew', 'Thomas'): [('Hugh', 'sister', 'Lynn'), ('Lynn', 'son', 'Thomas')]}, {('Hugh', 'sister', 'Lynn'): [('Hugh', 'sister', 'Lena'), ('Lena', 'sister', 'Lynn')]}]
['sister', 'sister', 'son']