With no explanation, label each line with "location-GPE", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
After
the
Spanish
Revolution
of
1868
,
he
returned
to
Spain
to
take
part
in
the
newly-created
provisional
government
.
After:O
the:O
Spanish:event-attack/battle/war/militaryconflict
Revolution:event-attack/battle/war/militaryconflict
of:O
1868:O
,:O
he:O
returned:O
to:O
Spain:location-GPE
to:O
take:O
part:O
in:O
the:O
newly-created:O
provisional:O
government:O
.:O