With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
is
Infocom
's
twenty-second
game
.
It:O
is:O
Infocom:organization-company
's:O
twenty-second:O
game:O
.:O