While [Pedro] was playing soccer with his son [Annie], his wife [Dorothy] took her daughter [Heather] to the cinema. [Heather]'s grandfather [Harold] was n't feeling well after eating at the restaurant.
('Annie', 'Harold')
While [Pedro] was playing soccer with his son [Annie], his wife [Dorothy] took her daughter [Heather] to the cinema. [Heather]'s grandfather [Harold] was n't feeling well after eating at the restaurant.
[{('Annie', 'grandfather', 'Harold'): [('Annie', 'sister', 'Heather'), ('Heather', 'grandfather', 'Harold')]}, {('Annie', 'sister', 'Heather'): [('Annie', 'father', 'Pedro'), ('Pedro', 'daughter', 'Heather')]}, {('Pedro', 'daughter', 'Heather'): [('Pedro', 'wife', 'Dorothy'), ('Dorothy', 'daughter', 'Heather')]}]
['father', 'wife', 'daughter', 'grandfather']