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 ":".
Much
larger
icefalls
may
be
found
in
the
outlet
glaciers
of
continental
ice
sheets
.
Much:O
larger:O
icefalls:O
may:O
be:O
found:O
in:O
the:O
outlet:O
glaciers:O
of:O
continental:O
ice:O
sheets:O
.:O