[Joshua] and his father [James] went jogging by the lake. [Lena] and her mother [Frances] went to volunteer at the homeless shelter last weekend. [Frances] bought a new video game for her son [Joshua].
('James', 'Lena')
[Joshua] and his father [James] went jogging by the lake. [Frances] bought a new video game for her son [Joshua]. [Lena] and her mother [Frances] went to volunteer at the homeless shelter last weekend.
[{('James', 'daughter', 'Lena'): [('James', 'son', 'Joshua'), ('Joshua', 'sister', 'Lena')]}, {('Joshua', 'sister', 'Lena'): [('Joshua', 'mother', 'Frances'), ('Frances', 'daughter', 'Lena')]}]
['son', 'mother', 'daughter']