[Roy] took his wife [Mary] and his granddaughter [Gladys] to Disney Land.
('Mary', 'Gladys')
[Roy] took his wife [Mary] and his granddaughter [Gladys] to Disney Land.
[{('Mary', 'granddaughter', 'Gladys'): [('Mary', 'husband', 'Roy'), ('Roy', 'granddaughter', 'Gladys')]}]