[John] and his mother [Lillian] are very close. They spend as much time together as they can. [April] is always around her brother [John].
('April', 'Lillian')
[April] is always around her brother [John]. [John] and his mother [Lillian] are very close. They spend as much time together as they can.
[{('April', 'mother', 'Lillian'): [('April', 'brother', 'John'), ('John', 'mother', 'Lillian')]}]
['brother', 'mother']