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 ":".
Sandstone
belonging
to
the
Pottsville
Formation
is
found
from
above
the
mouth
of
the
tunnel
to
above
the
mouth
of
the
tunnel
.
Sandstone:O
belonging:O
to:O
the:O
Pottsville:O
Formation:O
is:O
found:O
from:O
above:O
the:O
mouth:O
of:O
the:O
tunnel:O
to:O
above:O
the:O
mouth:O
of:O
the:O
tunnel:O
.:O