[Harold] was making lemonade for his grandson [Jerome] and granddaughter [Annie]. [Jerome]'s father [Pedro] was out buying sugar. [Antonio] loves to play baseball with his dad, [Harold].
('Pedro', 'Antonio')
[Harold] was making lemonade for his grandson [Jerome] and granddaughter [Annie]. [Jerome]'s father [Pedro] was out buying sugar. [Antonio] loves to play baseball with his dad, [Harold].
[{('Pedro', 'brother', 'Antonio'): [('Pedro', 'father', 'Harold'), ('Harold', 'son', 'Antonio')]}, {('Pedro', 'father', 'Harold'): [('Pedro', 'son', 'Jerome'), ('Jerome', 'grandfather', 'Harold')]}, {('Jerome', 'grandfather', 'Harold'): [('Jerome', 'sister', 'Annie'), ('Annie', 'grandfather', 'Harold')]}]
['son', 'sister', 'grandfather', 'son']