With no explanation, label each line with "O", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
European
Team
Championship
bridge
championship
is
held
every
two
years
.
The:O
European:event-sportsevent
Team:event-sportsevent
Championship:event-sportsevent
bridge:event-sportsevent
championship:event-sportsevent
is:O
held:O
every:O
two:O
years:O
.:O