With no explanation, label each line with "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
maximum
number
of
athletes
per
nation
had
been
set
at
3
since
the
1930
Olympic
Congress
.
The:O
maximum:O
number:O
of:O
athletes:O
per:O
nation:O
had:O
been:O
set:O
at:O
3:O
since:O
the:O
1930:organization-other
Olympic:organization-other
Congress:organization-other
.:O