[Pete] called his brother [Leonard] on Friday because it was his birthday. [Anna] asked her grandmother, [Frances], if she wanted anything brought in to eat. [Anna]'s brother, [Pete], was making a trip to the sandwich shop.
('Frances', 'Leonard')
[Anna] asked her grandmother, [Frances], if she wanted anything brought in to eat. [Anna]'s brother, [Pete], was making a trip to the sandwich shop. [Pete] called his brother [Leonard] on Friday because it was his birthday.
[{('Frances', 'grandson', 'Leonard'): [('Frances', 'granddaughter', 'Anna'), ('Anna', 'brother', 'Leonard')]}, {('Anna', 'brother', 'Leonard'): [('Anna', 'brother', 'Pete'), ('Pete', 'brother', 'Leonard')]}]
['granddaughter', 'brother', 'brother']