[Ronald] went to stay with his uncle [Pedro] last weekend and had a great time. [Marie] baked a cake for her son [Ronald]. [Marie] made chicken noodle soup for her son [Ronald]. [Ronald]'s brother [Allan] did n't want to have any.
('Allan', 'Pedro')
[Marie] made chicken noodle soup for her son [Ronald]. [Ronald]'s brother [Allan] did n't want to have any. [Marie] baked a cake for her son [Ronald]. [Ronald] went to stay with his uncle [Pedro] last weekend and had a great time.
[{('Allan', 'uncle', 'Pedro'): [('Allan', 'mother', 'Marie'), ('Marie', 'brother', 'Pedro')]}, {('Marie', 'brother', 'Pedro'): [('Marie', 'son', 'Ronald'), ('Ronald', 'uncle', 'Pedro')]}, {('Allan', 'mother', 'Marie'): [('Allan', 'brother', 'Ronald'), ('Ronald', 'mother', 'Marie')]}]
['brother', 'mother', 'son', 'uncle']