[Joshua] loves his mother very much. Her name is [Frances]. [Lena] took her daughter [Martha] and her mother [Frances] car shopping.
('Joshua', 'Martha')
[Joshua] loves his mother very much. Her name is [Frances]. [Lena] took her daughter [Martha] and her mother [Frances] car shopping.
[{('Joshua', 'niece', 'Martha'): [('Joshua', 'sister', 'Lena'), ('Lena', 'daughter', 'Martha')]}, {('Joshua', 'sister', 'Lena'): [('Joshua', 'mother', 'Frances'), ('Frances', 'daughter', 'Lena')]}]
['mother', 'daughter', 'daughter']