With no explanation, label each line with "product-other", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Work
began
in
August
1948
,
and
the
first
version
was
operational
by
April
1949
;
a
program
written
to
search
for
Mersenne
primes
ran
error-free
for
nine
hours
on
the
night
of
16/17
June
1949
.
Work:O
began:O
in:O
August:O
1948:O
,:O
and:O
the:O
first:O
version:O
was:O
operational:O
by:O
April:O
1949:O
;:O
a:O
program:O
written:O
to:O
search:O
for:O
Mersenne:product-other
primes:product-other
ran:O
error-free:O
for:O
nine:O
hours:O
on:O
the:O
night:O
of:O
16/17:O
June:O
1949:O
.:O