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 ":".
There
are
eroded
river
basins
limiting
these
heights
wherever
the
ground
is
made
up
of
clay
or
marlstone
.
There:O
are:O
eroded:O
river:O
basins:O
limiting:O
these:O
heights:O
wherever:O
the:O
ground:O
is:O
made:O
up:O
of:O
clay:O
or:O
marlstone:O
.:O