[Frances] was so happy when her grandson [Pete] was born. [Cindy] took her son [Pete] to the football game. [Leonard] made his moth [Cindy] a mother's day gift at school.
('Leonard', 'Frances')
[Leonard] made his moth [Cindy] a mother's day gift at school. [Cindy] took her son [Pete] to the football game. [Frances] was so happy when her grandson [Pete] was born.
[{('Leonard', 'grandmother', 'Frances'): [('Leonard', 'brother', 'Pete'), ('Pete', 'grandmother', 'Frances')]}, {('Leonard', 'brother', 'Pete'): [('Leonard', 'mother', 'Cindy'), ('Cindy', 'son', 'Pete')]}]
['mother', 'son', 'grandmother']