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: THE
economics
of
Iron
Road
’s
$
US4.57
billion
Central
Eyre
Iron
Project
on
the
Eyre
Peninsula
have
improved
with
a
new
optimisation
study
indicating
it
can
produce
iron
ore
for
$
US37.72
per
tonne
.
Answer: 
THE:O
economics:O
of:O
Iron:B-ORG
Road:I-ORG
’s:O
$:O
US4.57:O
billion:O
Central:O
Eyre:O
Iron:O
Project:O
on:O
the:O
Eyre:B-LOC
Peninsula:I-LOC
have:O
improved:O
with:O
a:O
new:O
optimisation:O
study:O
indicating:O
it:O
can:O
produce:O
iron:O
ore:O
for:O
$:O
US37.72:O
per:O
tonne:O
.:O