With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
He
called
the
air
service
Associated
Air
Transport
,
Inc
.
He:O
called:O
the:O
air:O
service:O
Associated:O
Air:O
Transport:O
,:O
Inc:O
.:O