[Lena] was sewing a sweater for her sister [David]. [Francisco]'s son, [Richard] and sister [David] went biking by the coast today.
('Richard', 'Lena')
[Francisco]'s son, [Richard] and sister [David] went biking by the coast today. [Lena] was sewing a sweater for her sister [David].
[{('Richard', 'aunt', 'Lena'): [('Richard', 'father', 'Francisco'), ('Francisco', 'sister', 'Lena')]}, {('Francisco', 'sister', 'Lena'): [('Francisco', 'sister', 'David'), ('David', 'sister', 'Lena')]}]
['father', 'sister', 'sister']