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: We
've
mentioned
previously
that
the
supply
levels
of
existing
homes
are
still
emerging
out
of
the
winter
slump
,
and
are
now
similar
to
the
levels
we
've
seen
a
year
ago
.
Answer: 
We:O
've:O
mentioned:O
previously:O
that:O
the:O
supply:O
levels:O
of:O
existing:O
homes:O
are:O
still:O
emerging:O
out:O
of:O
the:O
winter:O
slump:O
,:O
and:O
are:O
now:O
similar:O
to:O
the:O
levels:O
we:O
've:O
seen:O
a:O
year:O
ago:O
.:O