[Dale] took his son [Travis] fishing one day and [Dale]'s wife [Theresa] packed them food to take with them.
('Theresa', 'Travis')
[Dale] took his son [Travis] fishing one day and [Dale]'s wife [Theresa] packed them food to take with them.
[{('Theresa', 'son', 'Travis'): [('Theresa', 'husband', 'Dale'), ('Dale', 'son', 'Travis')]}]
['husband', 'son']