[Louise] did not go to her brother [Kevin]'s baseball game because her and her mother, [Nancy] were at the store.
('Nancy', 'Kevin')
[Louise] did not go to her brother [Kevin]'s baseball game because her and her mother, [Nancy] were at the store.
[{('Nancy', 'son', 'Kevin'): [('Nancy', 'daughter', 'Louise'), ('Louise', 'brother', 'Kevin')]}]
['daughter', 'brother']