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 ":".
Due
to
technical
and
financial
problems
,
the
project
was
never
pursued
.
Due:O
to:O
technical:O
and:O
financial:O
problems:O
,:O
the:O
project:O
was:O
never:O
pursued:O
.:O