[Annie]'s sister [Rebecca] painted a picture for [Annie]'s mother, [Dorothy]. [Heather]'s uncle, [Robert], bought her a pony. [Heather] is so thrilled! [Heather] was sewing a sweater for her sister [Rebecca].
('Dorothy', 'Robert')
[Annie]'s sister [Rebecca] painted a picture for [Annie]'s mother, [Dorothy]. [Heather] was sewing a sweater for her sister [Rebecca]. [Heather]'s uncle, [Robert], bought her a pony. [Heather] is so thrilled!
[{('Dorothy', 'brother', 'Robert'): [('Dorothy', 'daughter', 'Heather'), ('Heather', 'uncle', 'Robert')]}, {('Dorothy', 'daughter', 'Heather'): [('Dorothy', 'daughter', 'Rebecca'), ('Rebecca', 'sister', 'Heather')]}, {('Dorothy', 'daughter', 'Rebecca'): [('Dorothy', 'daughter', 'Annie'), ('Annie', 'sister', 'Rebecca')]}]
['daughter', 'sister', 'sister', 'uncle']