[Gloria] and her mother [David] went dress shopping on Saturday. [Francisco] and his sister [Lena] are going for a walk. [David] needed to go to the store. [David] asked her sister [Lena] for a ride.
('Francisco', 'Gloria')
[Francisco] and his sister [Lena] are going for a walk. [David] needed to go to the store. [David] asked her sister [Lena] for a ride. [Gloria] and her mother [David] went dress shopping on Saturday.
[{('Francisco', 'niece', 'Gloria'): [('Francisco', 'sister', 'David'), ('David', 'daughter', 'Gloria')]}, {('Francisco', 'sister', 'David'): [('Francisco', 'sister', 'Lena'), ('Lena', 'sister', 'David')]}]
['sister', 'sister', 'daughter']