With no explanation, label each line with "O", "product-software", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
March
1990
,
Norton
Computing
released
the
Norton
Backup
program
dedicated
to
backing
up
and
restoring
hard
disks
.
In:O
March:O
1990:O
,:O
Norton:organization-company
Computing:organization-company
released:O
the:O
Norton:product-software
Backup:product-software
program:O
dedicated:O
to:O
backing:O
up:O
and:O
restoring:O
hard:O
disks:O
.:O