[Don] and his wife [Dolores] got married in Spain. [Lynn] was honored to take her son [Clarence] to the mother son dance at her son's school last Friday. [Dolores] called her brother, [Clarence], up to see how he was doing after surgery.
('Don', 'Lynn')
[Don] and his wife [Dolores] got married in Spain. [Dolores] called her brother, [Clarence], up to see how he was doing after surgery. [Lynn] was honored to take her son [Clarence] to the mother son dance at her son's school last Friday.
[{('Don', 'mother-in-law', 'Lynn'): [('Don', 'wife', 'Dolores'), ('Dolores', 'mother', 'Lynn')]}, {('Dolores', 'mother', 'Lynn'): [('Dolores', 'brother', 'Clarence'), ('Clarence', 'mother', 'Lynn')]}]
['wife', 'brother', 'mother']