[Lena] and her daughter [Martha] went shopping together last Monday and they bought new shoes for [Lena]'s kids. [Pamela] is best friends with her sister [Martha]. [Martha] does not get along with her brother [Charles].
('Charles', 'Lena')
[Pamela] is best friends with her sister [Martha]. [Martha] does not get along with her brother [Charles]. [Lena] and her daughter [Martha] went shopping together last Monday and they bought new shoes for [Lena]'s kids.
[{('Charles', 'mother', 'Lena'): [('Charles', 'sister', 'Pamela'), ('Pamela', 'mother', 'Lena')]}, {('Pamela', 'mother', 'Lena'): [('Pamela', 'sister', 'Martha'), ('Martha', 'mother', 'Lena')]}]
['sister', 'sister', 'mother']