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 ":".
The
system
consisted
of
runners
or
``
dak
''
(
)
who
would
carry
letters
from
one
point
to
another
and
then
hand
it
off
to
the
next
runner
who
would
do
the
same
.
The:O
system:O
consisted:O
of:O
runners:O
or:O
``:O
dak:O
'':O
(:O
):O
who:O
would:O
carry:O
letters:O
from:O
one:O
point:O
to:O
another:O
and:O
then:O
hand:O
it:O
off:O
to:O
the:O
next:O
runner:O
who:O
would:O
do:O
the:O
same:O
.:O