With no explanation, label each line with "O", "other-currency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
represents
the
South
Korean
won
,
the
North
Korean
won
and
,
unofficially
,
the
old
Korean
won
.
It:O
represents:O
the:O
South:other-currency
Korean:other-currency
won:other-currency
,:O
the:O
North:other-currency
Korean:other-currency
won:other-currency
and:O
,:O
unofficially:O
,:O
the:O
old:O
Korean:other-currency
won:other-currency
.:O