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 ":".
In
this
manner
,
the
miners
could
advance
about
per
month
.
In:O
this:O
manner:O
,:O
the:O
miners:O
could:O
advance:O
about:O
per:O
month:O
.:O