[Dale] asked his son, [James], to go grocery shopping for him. [James] was busy and sent his wife, [June], instead.
('Dale', 'June')
[Dale] asked his son, [James], to go grocery shopping for him. [James] was busy and sent his wife, [June], instead.
[{('Dale', 'daughter-in-law', 'June'): [('Dale', 'son', 'James'), ('James', 'wife', 'June')]}]
['son', 'wife']