[Amalia] and her sister [Sandy] were having lunch with their mother [Alma]. [Alma] also invited her son [Lionel] to join them for lunch.
('Amalia', 'Lionel')
[Amalia] and her sister [Sandy] were having lunch with their mother [Alma]. [Alma] also invited her son [Lionel] to join them for lunch.
[{('Amalia', 'brother', 'Lionel'): [('Amalia', 'mother', 'Alma'), ('Alma', 'son', 'Lionel')]}, {('Amalia', 'mother', 'Alma'): [('Amalia', 'sister', 'Sandy'), ('Sandy', 'mother', 'Alma')]}]