[Clarence] was very happy when his son [Dale] married. [Dale] and [Theresa] make a great couple.
('Theresa', 'Clarence')
[Clarence] was very happy when his son [Dale] married. [Dale] and [Theresa] make a great couple.
[{('Theresa', 'father-in-law', 'Clarence'): [('Theresa', 'husband', 'Dale'), ('Dale', 'father', 'Clarence')]}]
['husband', 'father']