[Roy]'s wife [Mary] is going to be the next CEO of the company. [Mary] likes taking her son [Herman] to school.
('Roy', 'Herman')
[Roy]'s wife [Mary] is going to be the next CEO of the company. [Mary] likes taking her son [Herman] to school.
[{('Roy', 'son', 'Herman'): [('Roy', 'wife', 'Mary'), ('Mary', 'son', 'Herman')]}]