[Tracy] likes to go on holiday with her son [Kevin] and her husband [Antonio]. [Kevin]'s grandfather, [Harold], sometimes joins them. [Harold] was proud of his son, [Pedro].
('Antonio', 'Pedro')
[Tracy] likes to go on holiday with her son [Kevin] and her husband [Antonio]. [Kevin]'s grandfather, [Harold], sometimes joins them. [Harold] was proud of his son, [Pedro].
[{('Antonio', 'brother', 'Pedro'): [('Antonio', 'father', 'Harold'), ('Harold', 'son', 'Pedro')]}, {('Antonio', 'father', 'Harold'): [('Antonio', 'son', 'Kevin'), ('Kevin', 'grandfather', 'Harold')]}, {('Antonio', 'son', 'Kevin'): [('Antonio', 'wife', 'Tracy'), ('Tracy', 'son', 'Kevin')]}]
['wife', 'son', 'grandfather', 'son']