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: At
this
moment
that
is
just
a
guess
,
presuming
that
the
horrible
slippage
in
the
first
quarter
was
almost
entirely
due
to
West
Coast
port
labor
actions
that
will
reverse
out
in
the
second
quarter
.
Answer: 
At:O
this:O
moment:O
that:O
is:O
just:O
a:O
guess:O
,:O
presuming:O
that:O
the:O
horrible:O
slippage:O
in:O
the:O
first:O
quarter:O
was:O
almost:O
entirely:O
due:O
to:O
West:O
Coast:O
port:O
labor:O
actions:O
that:O
will:O
reverse:O
out:O
in:O
the:O
second:O
quarter:O
.:O