[Pedro] took his daughter [Heather] to see a movie. [Heather]'s sister [Rebecca] was sad because she was grounded and was not allowed to go. [Marie] was eager to see her niece, [Rebecca]. They had n't seen each other in ages [Pedro] and his daughter, [Heather] had tea.
('Heather', 'Marie')
[Pedro] and his daughter, [Heather] had tea. [Pedro] took his daughter [Heather] to see a movie. [Heather]'s sister [Rebecca] was sad because she was grounded and was not allowed to go. [Marie] was eager to see her niece, [Rebecca]. They had n't seen each other in ages
[{('Heather', 'aunt', 'Marie'): [('Heather', 'father', 'Pedro'), ('Pedro', 'sister', 'Marie')]}, {('Pedro', 'sister', 'Marie'): [('Pedro', 'daughter', 'Rebecca'), ('Rebecca', 'aunt', 'Marie')]}, {('Pedro', 'daughter', 'Rebecca'): [('Pedro', 'daughter', 'Heather'), ('Heather', 'sister', 'Rebecca')]}]
['father', 'daughter', 'sister', 'aunt']