[Hugh] taught his daughter, [Gloria], how to ride a bike. [David] picked up her daughter [Marie] from school early. [Gloria] and her mother [David] went dress shopping on Saturday.
('Marie', 'Hugh')
[David] picked up her daughter [Marie] from school early. [Gloria] and her mother [David] went dress shopping on Saturday. [Hugh] taught his daughter, [Gloria], how to ride a bike.
[{('Marie', 'father', 'Hugh'): [('Marie', 'sister', 'Gloria'), ('Gloria', 'father', 'Hugh')]}, {('Marie', 'sister', 'Gloria'): [('Marie', 'mother', 'David'), ('David', 'daughter', 'Gloria')]}]
['mother', 'daughter', 'father']