[Dorothy] took her daughter [Rebecca] to see a movie on Friday. She let her pick the movie and she enjoyed it very much. [Rebecca] and her sister [Cheryl] are the only children in their family. [Dorothy] took her son [James] to school and his grandfather [Harold] picked him up at then end of the school day.
('Cheryl', 'Harold')
[Rebecca] and her sister [Cheryl] are the only children in their family. [Dorothy] took her daughter [Rebecca] to see a movie on Friday. She let her pick the movie and she enjoyed it very much. [Dorothy] took her son [James] to school and his grandfather [Harold] picked him up at then end of the school day.
[{('Cheryl', 'grandfather', 'Harold'): [('Cheryl', 'brother', 'James'), ('James', 'grandfather', 'Harold')]}, {('Cheryl', 'brother', 'James'): [('Cheryl', 'sister', 'Rebecca'), ('Rebecca', 'brother', 'James')]}, {('Rebecca', 'brother', 'James'): [('Rebecca', 'mother', 'Dorothy'), ('Dorothy', 'son', 'James')]}]
['sister', 'mother', 'son', 'grandfather']