[Marie] took her son [Ronald] to school this morning because he missed the bus. [Marie] went to the arcade with her niece, [Annie]. They had lots of fun playing together. [Annie] picked her sister, [Heather], up from the mall. [Heather] called her dad, [Pedro], when she got home to let him know where she was.
('Pedro', 'Ronald')
[Annie] picked her sister, [Heather], up from the mall. [Heather] called her dad, [Pedro], when she got home to let him know where she was. [Marie] went to the arcade with her niece, [Annie]. They had lots of fun playing together. [Marie] took her son [Ronald] to school this morning because he missed the bus.
[{('Pedro', 'nephew', 'Ronald'): [('Pedro', 'sister', 'Marie'), ('Marie', 'son', 'Ronald')]}, {('Pedro', 'sister', 'Marie'): [('Pedro', 'daughter', 'Annie'), ('Annie', 'aunt', 'Marie')]}, {('Pedro', 'daughter', 'Annie'): [('Pedro', 'daughter', 'Heather'), ('Heather', 'sister', 'Annie')]}]
['daughter', 'sister', 'aunt', 'son']