[Annie]'s sister [Rebecca] and father [Pedro] collected money for a gift for [Pedro]'s wife, [Dorothy]. [Rebecca] received a very nice letter from her grandfather [Harold].
('Dorothy', 'Harold')
[Annie]'s sister [Rebecca] and father [Pedro] collected money for a gift for [Pedro]'s wife, [Dorothy]. [Rebecca] received a very nice letter from her grandfather [Harold].
[{('Dorothy', 'father-in-law', 'Harold'): [('Dorothy', 'husband', 'Pedro'), ('Pedro', 'father', 'Harold')]}, {('Pedro', 'father', 'Harold'): [('Pedro', 'daughter', 'Annie'), ('Annie', 'grandfather', 'Harold')]}, {('Annie', 'grandfather', 'Harold'): [('Annie', 'sister', 'Rebecca'), ('Rebecca', 'grandfather', 'Harold')]}]
['husband', 'daughter', 'sister', 'grandfather']