[Pedro] 'son [James] could not believe that his father bought him a coffee machine for his birthday. [Dorothy]'s son [James] missed seeing his mother on the weekends. [Marie]'s sister, [Dorothy], needed help with her dinner party. Thankfully, [Marie]'s daughter, [Elsie], was eager to pitch in/
('Pedro', 'Elsie')
[Pedro] 'son [James] could not believe that his father bought him a coffee machine for his birthday. [Dorothy]'s son [James] missed seeing his mother on the weekends. [Marie]'s sister, [Dorothy], needed help with her dinner party. Thankfully, [Marie]'s daughter, [Elsie], was eager to pitch in/
[{('Pedro', 'niece', 'Elsie'): [('Pedro', 'sister', 'Marie'), ('Marie', 'daughter', 'Elsie')]}, {('Pedro', 'sister', 'Marie'): [('Pedro', 'son', 'James'), ('James', 'aunt', 'Marie')]}, {('James', 'aunt', 'Marie'): [('James', 'mother', 'Dorothy'), ('Dorothy', 'sister', 'Marie')]}]
['son', 'mother', 'sister', 'daughter']