[James] is son of [Theresa]. [June] and her husband [James] watched the fireworks by the lake last night.
('June', 'Theresa')
[June] and her husband [James] watched the fireworks by the lake last night. [James] is son of [Theresa].
[{('June', 'mother-in-law', 'Theresa'): [('June', 'husband', 'James'), ('James', 'mother', 'Theresa')]}]
['husband', 'mother']