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
the
same
time
,
this
exhibition
also
commemorates
the
hard
work
of
the
athletes
and
the
efforts
of
cameramen
to
catch
special
glimpses
of
athletes
performing
their
sports
.
Answer: 
At:O
the:O
same:O
time:O
,:O
this:O
exhibition:O
also:O
commemorates:O
the:O
hard:O
work:O
of:O
the:O
athletes:O
and:O
the:O
efforts:O
of:O
cameramen:O
to:O
catch:O
special:O
glimpses:O
of:O
athletes:O
performing:O
their:O
sports:O
.:O