[Lena]'s father, [James], was running late picking up his daughter, [David], from school. [Lena] is the mother of a son named [Irvin].
('Irvin', 'David')
[Lena] is the mother of a son named [Irvin]. [Lena]'s father, [James], was running late picking up his daughter, [David], from school.
[{('Irvin', 'aunt', 'David'): [('Irvin', 'mother', 'Lena'), ('Lena', 'sister', 'David')]}, {('Lena', 'sister', 'David'): [('Lena', 'father', 'James'), ('James', 'daughter', 'David')]}]
['mother', 'father', 'daughter']