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 ":".
Each
of
those
areas
sponsors
an
art
walk
,
usually
monthly
.
Each:O
of:O
those:O
areas:O
sponsors:O
an:O
art:O
walk:O
,:O
usually:O
monthly:O
.:O