[Helen] is taking a trip to see her sister [Katherine]. [Matthew] was proud of his son, [Andy]. [Andy] was invited to his Aunt [Helen]'s wedding next Spring.
('Matthew', 'Katherine')
[Matthew] was proud of his son, [Andy]. [Andy] was invited to his Aunt [Helen]'s wedding next Spring. [Helen] is taking a trip to see her sister [Katherine].
[{('Matthew', 'sister', 'Katherine'): [('Matthew', 'sister', 'Helen'), ('Helen', 'sister', 'Katherine')]}, {('Matthew', 'sister', 'Helen'): [('Matthew', 'son', 'Andy'), ('Andy', 'aunt', 'Helen')]}]