[Annie] is a daughter of [Pedro] it seems. [Cheryl] and her sister [Annie] braided each other's hair before school. [Pedro] and her sister [Tracy] decided to take a trip to Mexico together. [Harold] took his granddaughter [Cheryl] to the park.
('Tracy', 'Harold')
[Pedro] and her sister [Tracy] decided to take a trip to Mexico together. [Annie] is a daughter of [Pedro] it seems. [Cheryl] and her sister [Annie] braided each other's hair before school. [Harold] took his granddaughter [Cheryl] to the park.
[{('Tracy', 'father', 'Harold'): [('Tracy', 'brother', 'Pedro'), ('Pedro', 'father', 'Harold')]}, {('Pedro', 'father', 'Harold'): [('Pedro', 'daughter', 'Annie'), ('Annie', 'grandfather', 'Harold')]}, {('Annie', 'grandfather', 'Harold'): [('Annie', 'sister', 'Cheryl'), ('Cheryl', 'grandfather', 'Harold')]}]
['brother', 'daughter', 'sister', 'grandfather']