With no explanation, label each line with "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
Haitian
Revolution
began
in
1791
,
just
before
the
French
Revolutionary
Wars
,
and
continued
until
1804
.
The:O
Haitian:event-attack/battle/war/militaryconflict
Revolution:event-attack/battle/war/militaryconflict
began:O
in:O
1791:O
,:O
just:O
before:O
the:O
French:event-attack/battle/war/militaryconflict
Revolutionary:event-attack/battle/war/militaryconflict
Wars:event-attack/battle/war/militaryconflict
,:O
and:O
continued:O
until:O
1804:O
.:O