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 ":".
After
leaving
he
worked
briefly
for
a
commercial
and
industrial
photographer
and
as
a
commercial
artist
.
After:O
leaving:O
he:O
worked:O
briefly:O
for:O
a:O
commercial:O
and:O
industrial:O
photographer:O
and:O
as:O
a:O
commercial:O
artist:O
.:O