[Pedro] and his daughter [Rebecca] are planning a trip to the mountains. They have n't been in almost 10 years. [Cheryl] and her sister [Rebecca] are the only children in their family. [Cheryl] loved her mother [Dorothy]. She was heartbroken when she heard [Dorothy] had suddenly passed away. [Tracy] was sewing a sweater for her sister [Dorothy].
('Pedro', 'Tracy')
[Pedro] and his daughter [Rebecca] are planning a trip to the mountains. They have n't been in almost 10 years. [Cheryl] and her sister [Rebecca] are the only children in their family. [Cheryl] loved her mother [Dorothy]. She was heartbroken when she heard [Dorothy] had suddenly passed away. [Tracy] was sewing a sweater for her sister [Dorothy].
[{('Pedro', 'sister', 'Tracy'): [('Pedro', 'daughter', 'Rebecca'), ('Rebecca', 'aunt', 'Tracy')]}, {('Rebecca', 'aunt', 'Tracy'): [('Rebecca', 'mother', 'Dorothy'), ('Dorothy', 'sister', 'Tracy')]}, {('Rebecca', 'mother', 'Dorothy'): [('Rebecca', 'sister', 'Cheryl'), ('Cheryl', 'mother', 'Dorothy')]}]
['daughter', 'sister', 'mother', 'sister']