With no explanation, label each line with "other-livingthing", "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
It
has
been
confirmed
that
Siberian
tigers
are
only
on
the
side
of
North
Korea
now
.
It:O
has:O
been:O
confirmed:O
that:O
Siberian:other-livingthing
tigers:other-livingthing
are:O
only:O
on:O
the:O
side:O
of:O
North:location-GPE
Korea:location-GPE
now:O
.:O