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: Quality
standards
serve
as
a
guide
to
producers
and
services
providers
to
ensure
that
businesses
do
not
commit
grievous
mistakes
before
starting
all
over
again
.
Answer: 
Quality:O
standards:O
serve:O
as:O
a:O
guide:O
to:O
producers:O
and:O
services:O
providers:O
to:O
ensure:O
that:O
businesses:O
do:O
not:O
commit:O
grievous:O
mistakes:O
before:O
starting:O
all:O
over:O
again:O
.:O