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: "
Once
the
network
is
rolled
out
in
several
years
,
then
there
may
be
prospects
for
upgrading
some
parts
of
the
network
to
FTTP
,
and
that
will
probably
be
done
on
a
commercial
basis
,
depending
on
demand
in
certain
areas
.
"
Answer: 
":O
Once:O
the:O
network:O
is:O
rolled:O
out:O
in:O
several:O
years:O
,:O
then:O
there:O
may:O
be:O
prospects:O
for:O
upgrading:O
some:O
parts:O
of:O
the:O
network:O
to:O
FTTP:O
,:O
and:O
that:O
will:O
probably:O
be:O
done:O
on:O
a:O
commercial:O
basis:O
,:O
depending:O
on:O
demand:O
in:O
certain:O
areas:O
.:O
":O