[John] built a playhouse for his daughter [Tracy], which was painted by his wife [Katherine]. [Matthew] took his sister [Katherine] to the movies with him to see the new Star Wars film.
('Matthew', 'Tracy')
[Matthew] took his sister [Katherine] to the movies with him to see the new Star Wars film. [John] built a playhouse for his daughter [Tracy], which was painted by his wife [Katherine].
[{('Matthew', 'niece', 'Tracy'): [('Matthew', 'sister', 'Katherine'), ('Katherine', 'daughter', 'Tracy')]}, {('Katherine', 'daughter', 'Tracy'): [('Katherine', 'husband', 'John'), ('John', 'daughter', 'Tracy')]}]