In the list of tokens, identify 'Person', 'Location', and 'Organisation' and label each accordingly. If the entity spans multiple tokens, use the prefix B-PER, B-LOC, or B-ORG for the first token, and I-PER, I-LOC, or I-ORG for the subsequent tokens of that entity. The beginning of each separate entity should always be labeled with a B-PER, B-LOC, or B-ORG prefix. If the token does not fit into any of the three named categories, or is not a named entity, label it as 'O'. Each line should contain one token and its corresponding label, separated by a colon. Do not combine tokens on your own. The format for each line should be: 'token:label'.

Text: “
Chinese
steel
mills
are
facing
significant
environmental
protection
pressures
and
in
response
are
adopting
a
range
of
measures
to
deal
with
this
challenge
,
including
the
use
of
higher
quality
iron
ore
feedstocks
.
’’
Answer: 
“:O
Chinese:O
steel:O
mills:O
are:O
facing:O
significant:O
environmental:O
protection:O
pressures:O
and:O
in:O
response:O
are:O
adopting:O
a:O
range:O
of:O
measures:O
to:O
deal:O
with:O
this:O
challenge:O
,:O
including:O
the:O
use:O
of:O
higher:O
quality:O
iron:O
ore:O
feedstocks:O
.:O
’’:O