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
battalion
went
on
to
fight
at
the
Siege
of
Badajoz
in
March
1812
.
The:O
battalion:O
went:O
on:O
to:O
fight:O
at:O
the:O
Siege:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Badajoz:event-attack/battle/war/militaryconflict
in:O
March:O
1812:O
.:O