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: However
,
looking
ahead
to
its
earnings
growth
potential
,
it
could
prove
to
be
a
hugely
exciting
investment
.
Answer: 
However:O
,:O
looking:O
ahead:O
to:O
its:O
earnings:O
growth:O
potential:O
,:O
it:O
could:O
prove:O
to:O
be:O
a:O
hugely:O
exciting:O
investment:O
.:O