With no explanation, label each line with "organization-media/newspaper", "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
NBC
Europe
helped
to
develop
the
Leipzig
-based
Games
Convention
,
the
largest
European
video
game
exposition
with
more
than
100,000
visitors
each
year
.
NBC:organization-media/newspaper
Europe:organization-media/newspaper
helped:O
to:O
develop:O
the:O
Leipzig:location-GPE
-based:O
Games:O
Convention:O
,:O
the:O
largest:O
European:location-GPE
video:O
game:O
exposition:O
with:O
more:O
than:O
100,000:O
visitors:O
each:O
year:O
.:O