With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
After
Markov
's
death
the
wound
on
Kostov
's
back
was
examined
and
a
ricin-laced
pellet
identical
to
the
one
used
against
Markov
was
removed
.
After:O
Markov:person-other
's:O
death:O
the:O
wound:O
on:O
Kostov:person-other
's:O
back:O
was:O
examined:O
and:O
a:O
ricin-laced:O
pellet:O
identical:O
to:O
the:O
one:O
used:O
against:O
Markov:person-other
was:O
removed:O
.:O