[Lena] took her brother [Joshua] to work Monday because his car was in the shop getting a tune up. [Lena] has been waiting around all day for her son, [Irvin]. [Joshua] and her sister [Cindy] decided to take a trip to Mexico together.
('Cindy', 'Irvin')
[Joshua] and her sister [Cindy] decided to take a trip to Mexico together. [Lena] took her brother [Joshua] to work Monday because his car was in the shop getting a tune up. [Lena] has been waiting around all day for her son, [Irvin].
[{('Cindy', 'nephew', 'Irvin'): [('Cindy', 'sister', 'Lena'), ('Lena', 'son', 'Irvin')]}, {('Cindy', 'sister', 'Lena'): [('Cindy', 'brother', 'Joshua'), ('Joshua', 'sister', 'Lena')]}]
['brother', 'sister', 'son']