With no explanation, label each line with "O", "building-airport", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-hospital" or "building-hotel" preceded by ":".
“
These
will
be
closed
zones
with
comfortable
living
and
service
conditions
,
”
he
said
,
adding
“
We
’
re
restoring
the
infrastructure
of
the
Tiksi
airport
.
“:O
These:O
will:O
be:O
closed:O
zones:O
with:O
comfortable:O
living:O
and:O
service:O
conditions:O
,:O
”:O
he:O
said:O
,:O
adding:O
“:O
We:O
’:O
re:O
restoring:O
the:O
infrastructure:O
of:O
the:O
Tiksi:building-airport
airport:building-airport
.:O