[Lillian] took her daughter [Andrea] to see her very first ballet performance. [John] was waiting patiently for his wife, [Andrea].
('John', 'Lillian')
[John] was waiting patiently for his wife, [Andrea]. [Lillian] took her daughter [Andrea] to see her very first ballet performance.
[{('John', 'mother-in-law', 'Lillian'): [('John', 'wife', 'Andrea'), ('Andrea', 'mother', 'Lillian')]}]
['wife', 'mother']