[Pedro] was sad to learn that his sister [Marie] was not going to make it to dinner like they had planned. [Beverly] could n't wait to get off the plane to see her mother, [Jennifer]. [Pedro] took a cab to the mall with his sister [Tracy]. [Tracy]'s sister [Beverly] drove herself there.
('Jennifer', 'Marie')
[Beverly] could n't wait to get off the plane to see her mother, [Jennifer]. [Pedro] took a cab to the mall with his sister [Tracy]. [Tracy]'s sister [Beverly] drove herself there. [Pedro] was sad to learn that his sister [Marie] was not going to make it to dinner like they had planned.
[{('Jennifer', 'aunt', 'Marie'): [('Jennifer', 'mother', 'Beverly'), ('Beverly', 'sister', 'Marie')]}, {('Beverly', 'sister', 'Marie'): [('Beverly', 'sister', 'Tracy'), ('Tracy', 'sister', 'Marie')]}, {('Tracy', 'sister', 'Marie'): [('Tracy', 'brother', 'Pedro'), ('Pedro', 'sister', 'Marie')]}]
['mother', 'sister', 'brother', 'sister']