[Pete] asked his father [Francisco] if he could stay home from school because he was sick. [Francisco] checked on his son [Leonard] to see if he had a fever. [Pete] could n't wait to introduce his new son to his uncle, [Joshua].
('Leonard', 'Joshua')
[Pete] asked his father [Francisco] if he could stay home from school because he was sick. [Francisco] checked on his son [Leonard] to see if he had a fever. [Pete] could n't wait to introduce his new son to his uncle, [Joshua].
[{('Leonard', 'uncle', 'Joshua'): [('Leonard', 'father', 'Francisco'), ('Francisco', 'brother', 'Joshua')]}, {('Francisco', 'brother', 'Joshua'): [('Francisco', 'son', 'Pete'), ('Pete', 'uncle', 'Joshua')]}]
['father', 'son', 'uncle']