With no explanation, label each line with "O", "event-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
has
also
written
several
plays
and
various
articles
on
the
Iranian
Constitutional
Revolution
of
1905-1911
,
the
French
Revolution
,
and
the
Russian
Revolution
.
He:O
has:O
also:O
written:O
several:O
plays:O
and:O
various:O
articles:O
on:O
the:O
Iranian:event-other
Constitutional:event-other
Revolution:event-other
of:O
1905-1911:O
,:O
the:O
French:event-other
Revolution:event-other
,:O
and:O
the:O
Russian:O
Revolution:O
.:O