[Amy] was unhappy with her son, [Michael], and his grades. She enlisted a tutor to help him. [Dennis] and [Michael] are brothers who look nothing alike.
('Amy', 'Dennis')
[Amy] was unhappy with her son, [Michael], and his grades. She enlisted a tutor to help him. [Dennis] and [Michael] are brothers who look nothing alike.
[{('Amy', 'son', 'Dennis'): [('Amy', 'son', 'Michael'), ('Michael', 'brother', 'Dennis')]}]
['son', 'brother']