[Martha] went to a movie with her sister [Stephanie]. [Stephanie] brought along her son [Michael] who loved going to the movies with his family.
('Martha', 'Michael')
[Martha] went to a movie with her sister [Stephanie]. [Stephanie] brought along her son [Michael] who loved going to the movies with his family.
[{('Martha', 'nephew', 'Michael'): [('Martha', 'sister', 'Stephanie'), ('Stephanie', 'son', 'Michael')]}]