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 ":".
His
life
's
work
was
playwriting
and
he
adapted
most
of
his
plays
from
novels
.
His:O
life:O
's:O
work:O
was:O
playwriting:O
and:O
he:O
adapted:O
most:O
of:O
his:O
plays:O
from:O
novels:O
.:O