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: Standards
are
sets
of
requirements
,
specifications
,
guidelines
or
characteristics
that
can
be
used
consistently
to
ensure
that
materials
,
products
,
processes
and
services
are
fit
for
their
purpose
.
Answer: 
Standards:O
are:O
sets:O
of:O
requirements:O
,:O
specifications:O
,:O
guidelines:O
or:O
characteristics:O
that:O
can:O
be:O
used:O
consistently:O
to:O
ensure:O
that:O
materials:O
,:O
products:O
,:O
processes:O
and:O
services:O
are:O
fit:O
for:O
their:O
purpose:O
.:O