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 ":".
Twenty-four
hours
after
the
parade
had
ended
,
118
Philadelphians
were
described
as
coming
down
with
``
a
mysterious
,
deadly
influenza
.
''
Twenty-four:O
hours:O
after:O
the:O
parade:O
had:O
ended:O
,:O
118:O
Philadelphians:O
were:O
described:O
as:O
coming:O
down:O
with:O
``:O
a:O
mysterious:O
,:O
deadly:O
influenza:O
.:O
'':O