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 ":".
Seventy-one
people
were
reportedly
infected
,
in
which
no
fatalities
occurred
.
Seventy-one:O
people:O
were:O
reportedly:O
infected:O
,:O
in:O
which:O
no:O
fatalities:O
occurred:O
.:O