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 ":".
Potter
now
embarked
on
work
as
a
television
playwright
.
Potter:person-politician
now:O
embarked:O
on:O
work:O
as:O
a:O
television:O
playwright:O
.:O