[Pedro] was teacher his daughter [Cheryl] how to drive. She made him a nervous wreck! [Annie] and her sister [Heather] both wanted to play with the same doll. [Annie]'s mother, [Dorothy], told them to share. [Pedro] and his wife, [Dorothy] just got married in Las Vegas last month.
('Heather', 'Cheryl')
[Annie] and her sister [Heather] both wanted to play with the same doll. [Annie]'s mother, [Dorothy], told them to share. [Pedro] and his wife, [Dorothy] just got married in Las Vegas last month. [Pedro] was teacher his daughter [Cheryl] how to drive. She made him a nervous wreck!
[{('Heather', 'sister', 'Cheryl'): [('Heather', 'sister', 'Annie'), ('Annie', 'sister', 'Cheryl')]}, {('Annie', 'sister', 'Cheryl'): [('Annie', 'mother', 'Dorothy'), ('Dorothy', 'daughter', 'Cheryl')]}, {('Dorothy', 'daughter', 'Cheryl'): [('Dorothy', 'husband', 'Pedro'), ('Pedro', 'daughter', 'Cheryl')]}]
['sister', 'mother', 'husband', 'daughter']