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 ":".
This
was
usually
the
work
newcomers
were
assigned
to
prove
themselves
.
This:O
was:O
usually:O
the:O
work:O
newcomers:O
were:O
assigned:O
to:O
prove:O
themselves:O
.:O