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: Sudan
to
Extend
Electricity
Grid
to
Darfur
Tagged
:
Sudan
:
Darfur
Governors
to
Restore
Rule
of
Law
,
Social
Fabric
Khartoum
—
Answer: 
Sudan:B-LOC
to:O
Extend:O
Electricity:O
Grid:O
to:O
Darfur:B-LOC
Tagged:O
::O
Sudan:O
::O
Darfur:B-LOC
Governors:O
to:O
Restore:O
Rule:O
of:O
Law:O
,:O
Social:O
Fabric:O
Khartoum:B-LOC
—:O