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 ":".
It
was
part
of
Tier
IV
of
the
2005
WTA
Tour
.
It:O
was:O
part:O
of:O
Tier:event-sportsevent
IV:event-sportsevent
of:event-sportsevent
the:event-sportsevent
2005:event-sportsevent
WTA:event-sportsevent
Tour:event-sportsevent
.:O