[Martha] is taking a trip to see her sister [Tina]. [Lena] baked cookies for her mother [Tina] and her brother [Joshua].
('Martha', 'Joshua')
[Martha] is taking a trip to see her sister [Tina]. [Lena] baked cookies for her mother [Tina] and her brother [Joshua].
[{('Martha', 'uncle', 'Joshua'): [('Martha', 'mother', 'Lena'), ('Lena', 'brother', 'Joshua')]}, {('Martha', 'mother', 'Lena'): [('Martha', 'sister', 'Tina'), ('Tina', 'mother', 'Lena')]}]
['sister', 'mother', 'brother']