[Frances] took her grandson, [Irvin], and [Irvin]'s sister [Mildred] out for cupcakes. [James] asked his wife, [Frances], to bring home a dozen extra cupcakes.
('James', 'Mildred')
[Frances] took her grandson, [Irvin], and [Irvin]'s sister [Mildred] out for cupcakes. [James] asked his wife, [Frances], to bring home a dozen extra cupcakes.
[{('James', 'granddaughter', 'Mildred'): [('James', 'grandson', 'Irvin'), ('Irvin', 'sister', 'Mildred')]}, {('James', 'grandson', 'Irvin'): [('James', 'wife', 'Frances'), ('Frances', 'grandson', 'Irvin')]}]
['wife', 'grandson', 'sister']