With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
Six
teams
participated
in
the
league
.
Six:O
teams:O
participated:O
in:O
the:O
league:O
.:O