[Cheryl] and her sister [Heather] were getting together this weekend so that they could go hiking together they had n't spent time together alone in a while. [Dorothy] was contemplating on what to get her daughter [Heather] for her birthday. [Dorothy] then asked her son [Jeffrey] if he had any suggestions. [Pedro] took his daughter [Cheryl] to the movies
('Jeffrey', 'Pedro')
[Dorothy] was contemplating on what to get her daughter [Heather] for her birthday. [Dorothy] then asked her son [Jeffrey] if he had any suggestions. [Cheryl] and her sister [Heather] were getting together this weekend so that they could go hiking together they had n't spent time together alone in a while. [Pedro] took his daughter [Cheryl] to the movies
[{('Jeffrey', 'father', 'Pedro'): [('Jeffrey', 'sister', 'Cheryl'), ('Cheryl', 'father', 'Pedro')]}, {('Jeffrey', 'sister', 'Cheryl'): [('Jeffrey', 'sister', 'Heather'), ('Heather', 'sister', 'Cheryl')]}, {('Jeffrey', 'sister', 'Heather'): [('Jeffrey', 'mother', 'Dorothy'), ('Dorothy', 'daughter', 'Heather')]}]
['mother', 'daughter', 'sister', 'father']