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: John
has
been
writing
about
the
auto
business
and
investing
for
over
20
years
,
and
for
The
Motley
Fool
since
2007
.
Answer: 
John:B-PER
has:O
been:O
writing:O
about:O
the:O
auto:O
business:O
and:O
investing:O
for:O
over:O
20:O
years:O
,:O
and:O
for:O
The:O
Motley:B-ORG
Fool:I-ORG
since:O
2007:O
.:O