[Frances] read her son [Joshua] a bedtime story every night. [Lena] and her daughter [Mildred] went to visit [Lena]'s mother [Frances] last Sunday.
('Mildred', 'Joshua')
[Lena] and her daughter [Mildred] went to visit [Lena]'s mother [Frances] last Sunday. [Frances] read her son [Joshua] a bedtime story every night.
[{('Mildred', 'uncle', 'Joshua'): [('Mildred', 'mother', 'Lena'), ('Lena', 'brother', 'Joshua')]}, {('Lena', 'brother', 'Joshua'): [('Lena', 'mother', 'Frances'), ('Frances', 'son', 'Joshua')]}]
['mother', 'mother', 'son']