[Lena] and her mom, [Frances] went shopping all day. [Lena]'s brother [Joshua] and sister [David] were jealous.
('Frances', 'David')
[Lena] and her mom, [Frances] went shopping all day. [Lena]'s brother [Joshua] and sister [David] were jealous.
[{('Frances', 'daughter', 'David'): [('Frances', 'daughter', 'Lena'), ('Lena', 'sister', 'David')]}, {('Lena', 'sister', 'David'): [('Lena', 'brother', 'Joshua'), ('Joshua', 'sister', 'David')]}]
['daughter', 'brother', 'sister']