[Tracy] and her husband [Allan] just got back from their honeymoon in Hawaii. They had a wonderful time there. [Bret] gave his mother [Katherine] flowers on her birthday. [Bret] is the great brother of [Allan].
('Tracy', 'Katherine')
[Tracy] and her husband [Allan] just got back from their honeymoon in Hawaii. They had a wonderful time there. [Bret] is the great brother of [Allan]. [Bret] gave his mother [Katherine] flowers on her birthday.
[{('Tracy', 'mother-in-law', 'Katherine'): [('Tracy', 'husband', 'Allan'), ('Allan', 'mother', 'Katherine')]}, {('Allan', 'mother', 'Katherine'): [('Allan', 'brother', 'Bret'), ('Bret', 'mother', 'Katherine')]}]