With no explanation, label each line with "location-GPE", "O", "location-mountain", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
middle
part
of
the
glacier
is
bounded
on
the
north
by
the
Inland
Forts
and
on
the
south
by
Beacon
Valley
.
The:O
middle:O
part:O
of:O
the:O
glacier:O
is:O
bounded:O
on:O
the:O
north:O
by:O
the:O
Inland:location-GPE
Forts:location-GPE
and:O
on:O
the:O
south:O
by:O
Beacon:location-mountain
Valley:location-mountain
.:O