[Kevin] and [Linda] went on a cruise to the Bahamas for their wedding anniversary. [Linda]'s mother [Nancy] stayed with their kids while they were gone.
('Kevin', 'Nancy')
[Kevin] and [Linda] went on a cruise to the Bahamas for their wedding anniversary. [Linda]'s mother [Nancy] stayed with their kids while they were gone.
[{('Kevin', 'mother-in-law', 'Nancy'): [('Kevin', 'wife', 'Linda'), ('Linda', 'mother', 'Nancy')]}]
['wife', 'mother']