[Francisco] has a son named [Leonard]. [Leonard]'s sister is named [Anna], and she also has a brother named [Pete].
('Francisco', 'Pete')
[Francisco] has a son named [Leonard]. [Leonard]'s sister is named [Anna], and she also has a brother named [Pete].
[{('Francisco', 'son', 'Pete'): [('Francisco', 'daughter', 'Anna'), ('Anna', 'brother', 'Pete')]}, {('Francisco', 'daughter', 'Anna'): [('Francisco', 'son', 'Leonard'), ('Leonard', 'sister', 'Anna')]}]
['son', 'sister', 'brother']