With no explanation, label each line with "location-GPE", "O", "event-protest", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
code
remained
in
force
when
Belgium
became
part
of
the
United
Kingdom
of
the
Netherlands
in
1815
,
and
when
Belgium
became
a
sovereign
state
after
the
Belgian
Revolution
of
1830–1831
.
The:O
code:O
remained:O
in:O
force:O
when:O
Belgium:location-GPE
became:O
part:O
of:O
the:O
United:location-GPE
Kingdom:location-GPE
of:O
the:O
Netherlands:location-GPE
in:O
1815:O
,:O
and:O
when:O
Belgium:location-GPE
became:O
a:O
sovereign:O
state:O
after:O
the:O
Belgian:event-protest
Revolution:event-protest
of:O
1830–1831:O
.:O