[Lena] took her brother [Joshua] to work Monday because his car was in the shop getting a tune up. [Hugh] went skiing with his brother [Francisco]. [Francisco]'s sister [Lena] watched from the ski lodge.
('Joshua', 'Hugh')
[Lena] took her brother [Joshua] to work Monday because his car was in the shop getting a tune up. [Hugh] went skiing with his brother [Francisco]. [Francisco]'s sister [Lena] watched from the ski lodge.
[{('Joshua', 'brother', 'Hugh'): [('Joshua', 'brother', 'Francisco'), ('Francisco', 'brother', 'Hugh')]}, {('Joshua', 'brother', 'Francisco'): [('Joshua', 'sister', 'Lena'), ('Lena', 'brother', 'Francisco')]}]
['sister', 'brother', 'brother']