[Helen] borrowed some money from her brother [Rich]. [John] and his son [Bret] built a model rocket. [John]'s sister [Helen] was proud of them.
('Bret', 'Rich')
[John] and his son [Bret] built a model rocket. [John]'s sister [Helen] was proud of them. [Helen] borrowed some money from her brother [Rich].
[{('Bret', 'uncle', 'Rich'): [('Bret', 'father', 'John'), ('John', 'brother', 'Rich')]}, {('John', 'brother', 'Rich'): [('John', 'sister', 'Helen'), ('Helen', 'brother', 'Rich')]}]