[Frances] and her daughter [Lena] went shopping together last Monday and they bought new shoes for [Frances]'s kids. [Pamela] and her sister [Martha] were playing outside. [Pamela]'s mother [Lena] called for her to come inside.
('Martha', 'Frances')
[Pamela] and her sister [Martha] were playing outside. [Pamela]'s mother [Lena] called for her to come inside. [Frances] and her daughter [Lena] went shopping together last Monday and they bought new shoes for [Frances]'s kids.
[{('Martha', 'grandmother', 'Frances'): [('Martha', 'mother', 'Lena'), ('Lena', 'mother', 'Frances')]}, {('Martha', 'mother', 'Lena'): [('Martha', 'sister', 'Pamela'), ('Pamela', 'mother', 'Lena')]}]
['sister', 'mother', 'mother']