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: Further
,
Bahrain
upstream
E&P
market
structure
of
the
industry
based
on
oil
and
gas
production
for
leading
companies
is
also
provided
in
the
report
.
Answer: 
Further:O
,:O
Bahrain:B-LOC
upstream:O
E&P:O
market:O
structure:O
of:O
the:O
industry:O
based:O
on:O
oil:O
and:O
gas:O
production:O
for:O
leading:O
companies:O
is:O
also:O
provided:O
in:O
the:O
report:O
.:O