[John]'s wife [Katherine] had been feeling under the weather. [John] asked his son [Bret] to go to the store to buy medicine. [Loretta] took her mother, [Katherine], out for lunch.
('Loretta', 'Bret')
[Loretta] took her mother, [Katherine], out for lunch. [John]'s wife [Katherine] had been feeling under the weather. [John] asked his son [Bret] to go to the store to buy medicine.
[{('Loretta', 'brother', 'Bret'): [('Loretta', 'mother', 'Katherine'), ('Katherine', 'son', 'Bret')]}, {('Katherine', 'son', 'Bret'): [('Katherine', 'husband', 'John'), ('John', 'son', 'Bret')]}]