With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Also
a
Prime
Minister
,
Gheorghe
Grigore
Cantacuzino
was
Constantin
's
nephew
.
Also:O
a:O
Prime:O
Minister:O
,:O
Gheorghe:person-other
Grigore:person-other
Cantacuzino:person-other
was:O
Constantin:O
's:O
nephew:O
.:O