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 ":".
The
management
announced
at
closure
that
one
of
the
possibilities
of
creating
additional
short
term
value
was
through
open
cast
mining
extraction
of
the
residual
6
million
tonnes
of
anthracite
.
The:O
management:O
announced:O
at:O
closure:O
that:O
one:O
of:O
the:O
possibilities:O
of:O
creating:O
additional:O
short:O
term:O
value:O
was:O
through:O
open:O
cast:O
mining:O
extraction:O
of:O
the:O
residual:O
6:O
million:O
tonnes:O
of:O
anthracite:O
.:O