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 ":".
Subsequently
,
software
development
for
the
PDP-14
was
done
on
another
system
,
the
PDP-8
.
Subsequently:O
,:O
software:O
development:O
for:O
the:product-software
PDP-14:product-software
was:O
done:O
on:O
another:O
system:O
,:O
the:O
PDP-8:product-software
.:O