[Dorothy] was playing hide-and-seek with her sister [Marie]. [Marie] asked her sister [Beverly] to play with her. [Beverly] did n't want to, she wanted to play with her sister [Tracy] instead. [Harold] went to pick up his daughter [Dorothy] from school on the last day before summer vacation.
('Harold', 'Tracy')
[Harold] went to pick up his daughter [Dorothy] from school on the last day before summer vacation. [Dorothy] was playing hide-and-seek with her sister [Marie]. [Marie] asked her sister [Beverly] to play with her. [Beverly] did n't want to, she wanted to play with her sister [Tracy] instead.
[{('Harold', 'daughter', 'Tracy'): [('Harold', 'daughter', 'Dorothy'), ('Dorothy', 'sister', 'Tracy')]}, {('Dorothy', 'sister', 'Tracy'): [('Dorothy', 'sister', 'Beverly'), ('Beverly', 'sister', 'Tracy')]}, {('Dorothy', 'sister', 'Beverly'): [('Dorothy', 'sister', 'Marie'), ('Marie', 'sister', 'Beverly')]}]
['daughter', 'sister', 'sister', 'sister']