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 ":".
These
type
of
inhibitors
have
been
introduced
as
anti-influenza
drugs
as
they
prevent
the
virus
from
exiting
infected
cells
and
thus
stop
further
spreading
of
the
virus
.
These:O
type:O
of:O
inhibitors:O
have:O
been:O
introduced:O
as:O
anti-influenza:O
drugs:O
as:O
they:O
prevent:O
the:O
virus:O
from:O
exiting:O
infected:O
cells:O
and:O
thus:O
stop:O
further:O
spreading:O
of:O
the:O
virus:O
.:O