[David] went with her brother [Joshua] to the mall to buy some new candles. [Francisco] was n't sure how to help his son [Richard] with his math homework. [Francisco] decided to ask his brother [Joshua] for some help.
('Richard', 'David')
[Francisco] was n't sure how to help his son [Richard] with his math homework. [Francisco] decided to ask his brother [Joshua] for some help. [David] went with her brother [Joshua] to the mall to buy some new candles.
[{('Richard', 'aunt', 'David'): [('Richard', 'father', 'Francisco'), ('Francisco', 'sister', 'David')]}, {('Francisco', 'sister', 'David'): [('Francisco', 'brother', 'Joshua'), ('Joshua', 'sister', 'David')]}]
['father', 'brother', 'sister']