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 ":".
Belgium
switched
from
the
Belgian
franc
to
the
Euro
as
its
currency
after
1
January
2002
.
Belgium:other-currency
switched:O
from:O
the:O
Belgian:other-currency
franc:other-currency
to:O
the:O
Euro:other-currency
as:O
its:O
currency:O
after:O
1:O
January:O
2002:O
.:O