[Mildred] is a sister of [Irvin]. [Theodore] got into an argument with his brother [Irvin] and pushed him to the floor. As he burst into tears [Theodore] ran to his mother [Lena] for comfort.
('Lena', 'Mildred')
[Theodore] got into an argument with his brother [Irvin] and pushed him to the floor. As he burst into tears [Theodore] ran to his mother [Lena] for comfort. [Mildred] is a sister of [Irvin].
[{('Lena', 'daughter', 'Mildred'): [('Lena', 'son', 'Irvin'), ('Irvin', 'sister', 'Mildred')]}, {('Lena', 'son', 'Irvin'): [('Lena', 'son', 'Theodore'), ('Theodore', 'brother', 'Irvin')]}]
['son', 'brother', 'sister']