[Robert] is [Antonio]'s brother. and [Antonio] has a daughter named [Emma]. [Emma] is [Harold]'s grandaon. [Harold] bought a dress for his daughter [Tracy].
('Robert', 'Tracy')
[Robert] is [Antonio]'s brother. and [Antonio] has a daughter named [Emma]. [Emma] is [Harold]'s grandaon. [Harold] bought a dress for his daughter [Tracy].
[{('Robert', 'sister', 'Tracy'): [('Robert', 'father', 'Harold'), ('Harold', 'daughter', 'Tracy')]}, {('Robert', 'father', 'Harold'): [('Robert', 'brother', 'Antonio'), ('Antonio', 'father', 'Harold')]}, {('Antonio', 'father', 'Harold'): [('Antonio', 'daughter', 'Emma'), ('Emma', 'grandfather', 'Harold')]}]
['brother', 'daughter', 'grandfather', 'daughter']