[Lena], [Francisco]'s sister, was helping him around the house. Her brother [Joshua] was helping out too. [Leonard] asked his father, [Francisco], to help him with his math homework. [Francisco] could n't, because he was lousy at math himself.
('Leonard', 'Joshua')
[Leonard] asked his father, [Francisco], to help him with his math homework. [Francisco] could n't, because he was lousy at math himself. [Lena], [Francisco]'s sister, was helping him around the house. Her brother [Joshua] was helping out too.
[{('Leonard', 'uncle', 'Joshua'): [('Leonard', 'father', 'Francisco'), ('Francisco', 'brother', 'Joshua')]}, {('Francisco', 'brother', 'Joshua'): [('Francisco', 'sister', 'Lena'), ('Lena', 'brother', 'Joshua')]}]
['father', 'sister', 'brother']