[Anna]'s sister, [Wilhelmina], was able to find tickets to the concert. [Anna] was too busy to go so she gave her ticket to her grandmother, [Frances]. [Pete] is a very hot guy, but his sister [Wilhelmina] is even more attractive.
('Frances', 'Pete')
[Anna]'s sister, [Wilhelmina], was able to find tickets to the concert. [Anna] was too busy to go so she gave her ticket to her grandmother, [Frances]. [Pete] is a very hot guy, but his sister [Wilhelmina] is even more attractive.
[{('Frances', 'grandson', 'Pete'): [('Frances', 'granddaughter', 'Anna'), ('Anna', 'brother', 'Pete')]}, {('Anna', 'brother', 'Pete'): [('Anna', 'sister', 'Wilhelmina'), ('Wilhelmina', 'brother', 'Pete')]}]
['granddaughter', 'sister', 'brother']