[Laura] and her mother [Martha] went to volunteer at the homeless shelter last weekend. [Jacob] is a man with a niece named [Laura].
('Martha', 'Jacob')
[Laura] and her mother [Martha] went to volunteer at the homeless shelter last weekend. [Jacob] is a man with a niece named [Laura].
[{('Martha', 'brother', 'Jacob'): [('Martha', 'daughter', 'Laura'), ('Laura', 'uncle', 'Jacob')]}]