With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
His
ex-wife
,
Arianna
Huffington
,
was
an
opposing
candidate
.
His:O
ex-wife:O
,:O
Arianna:person-politician
Huffington:person-politician
,:O
was:O
an:O
opposing:O
candidate:O
.:O