[Marie] and her brothers [Antonio] and [Louis] planned a surprise party for [Louis]'s brother [Pedro]. [Emma] is a daughter of [Antonio] it seems.
('Pedro', 'Emma')
[Marie] and her brothers [Antonio] and [Louis] planned a surprise party for [Louis]'s brother [Pedro]. [Emma] is a daughter of [Antonio] it seems.
[{('Pedro', 'niece', 'Emma'): [('Pedro', 'brother', 'Antonio'), ('Antonio', 'daughter', 'Emma')]}, {('Pedro', 'brother', 'Antonio'): [('Pedro', 'brother', 'Louis'), ('Louis', 'brother', 'Antonio')]}, {('Louis', 'brother', 'Antonio'): [('Louis', 'sister', 'Marie'), ('Marie', 'brother', 'Antonio')]}]
['brother', 'sister', 'brother', 'daughter']