With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
Great
Imperial
Crown
was
first
used
in
a
coronation
by
Catherine
the
Great
,
and
it
was
last
worn
at
the
coronation
of
Nicholas
II
.
The:O
Great:O
Imperial:O
Crown:O
was:O
first:O
used:O
in:O
a:O
coronation:O
by:O
Catherine:person-politician
the:O
Great:O
,:O
and:O
it:O
was:O
last:O
worn:O
at:O
the:O
coronation:O
of:O
Nicholas:person-politician
II:person-politician
.:O