[Matthew] was playing football with his brother, [Rich]. [Matthew]'s brother, [John], had a broken leg and could only watch. [Rich]'s son [Keith] entered rehab for the ninth time at the age of thirty.
('John', 'Keith')
[Matthew] was playing football with his brother, [Rich]. [Matthew]'s brother, [John], had a broken leg and could only watch. [Rich]'s son [Keith] entered rehab for the ninth time at the age of thirty.
[{('John', 'nephew', 'Keith'): [('John', 'brother', 'Rich'), ('Rich', 'son', 'Keith')]}, {('John', 'brother', 'Rich'): [('John', 'brother', 'Matthew'), ('Matthew', 'brother', 'Rich')]}]