[Marie] has a son named [Allan]. [Louis] looked up to his older brother named [Pedro]. [Pedro] was very strong and quite brave and that's the reason [Louis] admires him. [Tracy] was swimming with her sister [Marie]. [Tracy]'s brother [Pedro] was tanning.
('Louis', 'Allan')
[Louis] looked up to his older brother named [Pedro]. [Pedro] was very strong and quite brave and that's the reason [Louis] admires him. [Tracy] was swimming with her sister [Marie]. [Tracy]'s brother [Pedro] was tanning. [Marie] has a son named [Allan].
[{('Louis', 'nephew', 'Allan'): [('Louis', 'sister', 'Marie'), ('Marie', 'son', 'Allan')]}, {('Louis', 'sister', 'Marie'): [('Louis', 'brother', 'Pedro'), ('Pedro', 'sister', 'Marie')]}, {('Pedro', 'sister', 'Marie'): [('Pedro', 'sister', 'Tracy'), ('Tracy', 'sister', 'Marie')]}]
['brother', 'sister', 'sister', 'son']