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: While
the
security
firm
estimates
around
39
infected
apps
,
another
Chinese
security
research
company
claims
that
this
figure
may
be
much
greater
than
300
.
Answer: 
While:O
the:O
security:O
firm:O
estimates:O
around:O
39:O
infected:O
apps:O
,:O
another:O
Chinese:O
security:O
research:O
company:O
claims:O
that:O
this:O
figure:O
may:O
be:O
much:O
greater:O
than:O
300:O
.:O