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: Over
the
last
five
years
,
as
the
economic
turmoil
escalated
,
the
Athex
Large
Cap
Index
lost
more
than
75
%
of
its
value
.
Answer: 
Over:O
the:O
last:O
five:O
years:O
,:O
as:O
the:O
economic:O
turmoil:O
escalated:O
,:O
the:O
Athex:O
Large:O
Cap:O
Index:O
lost:O
more:O
than:O
75:O
%:O
of:O
its:O
value:O
.:O