[David] has a son called [Johnson]. Each day they go to the park after school. [Francisco] took his sister [David] to the movies with him to see the new Star Wars film. [Johnson] has an aunt named [Lynn].
('Francisco', 'Lynn')
[Francisco] took his sister [David] to the movies with him to see the new Star Wars film. [David] has a son called [Johnson]. Each day they go to the park after school. [Johnson] has an aunt named [Lynn].
[{('Francisco', 'sister', 'Lynn'): [('Francisco', 'sister', 'David'), ('David', 'sister', 'Lynn')]}, {('David', 'sister', 'Lynn'): [('David', 'son', 'Johnson'), ('Johnson', 'aunt', 'Lynn')]}]
['sister', 'son', 'aunt']