[Martha] went to visit his grandmother, [Frances], at the nursing home. She was grateful for the company, she had n't had a family visit in months. [Martha] and her mother [Lena] went dress shopping on Saturday. [Lena] was sewing a sweater for her sister [David].
('David', 'Frances')
[Lena] was sewing a sweater for her sister [David]. [Martha] and her mother [Lena] went dress shopping on Saturday. [Martha] went to visit his grandmother, [Frances], at the nursing home. She was grateful for the company, she had n't had a family visit in months.
[{('David', 'mother', 'Frances'): [('David', 'sister', 'Lena'), ('Lena', 'mother', 'Frances')]}, {('Lena', 'mother', 'Frances'): [('Lena', 'daughter', 'Martha'), ('Martha', 'grandmother', 'Frances')]}]
['sister', 'daughter', 'grandmother']