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 ":".
Within
days
,
140,000
people
had
left
the
area
.
Within:O
days:O
,:O
140,000:O
people:O
had:O
left:O
the:O
area:O
.:O