[Ronald] was going out to dinner with his sister [Angelica] when he received a call from his grandfather [Harold]. [Angelica]'s brother, [Allan], was getting ready to start a new job. [Angelica] was very happy for him. [Marie] took her son [Allan] to school this morning because he missed the bus.
('Marie', 'Harold')
[Marie] took her son [Allan] to school this morning because he missed the bus. [Angelica]'s brother, [Allan], was getting ready to start a new job. [Angelica] was very happy for him. [Ronald] was going out to dinner with his sister [Angelica] when he received a call from his grandfather [Harold].
[{('Marie', 'father', 'Harold'): [('Marie', 'daughter', 'Angelica'), ('Angelica', 'grandfather', 'Harold')]}, {('Marie', 'daughter', 'Angelica'): [('Marie', 'son', 'Allan'), ('Allan', 'sister', 'Angelica')]}, {('Angelica', 'grandfather', 'Harold'): [('Angelica', 'brother', 'Ronald'), ('Ronald', 'grandfather', 'Harold')]}]
['son', 'sister', 'brother', 'grandfather']