With no explanation, label each line with "O", "product-software", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Initially
,
Linux
was
not
released
under
either
a
Free
software
or
an
Open-source
software
license
.
Initially:O
,:O
Linux:product-software
was:O
not:O
released:O
under:O
either:O
a:O
Free:O
software:O
or:O
an:O
Open-source:O
software:O
license:O
.:O