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: "
I
've
had
people
come
up
to
me
and
express
their
concerns
with
the
China
free
-
trade
agreement
.
Answer: 
":O
I:O
've:O
had:O
people:O
come:O
up:O
to:O
me:O
and:O
express:O
their:O
concerns:O
with:O
the:O
China:B-LOC
free:O
-:O
trade:O
agreement:O
.:O