With no explanation, label each line with "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Two
large
tributary
glaciers
,
the
East
Rongbuk
Glacier
and
the
West
Rongbuk
Glacier
,
flow
into
the
main
Rongbuk
Glacier
.
Two:O
large:O
tributary:O
glaciers:O
,:O
the:O
East:location-other
Rongbuk:location-other
Glacier:location-other
and:O
the:O
West:location-other
Rongbuk:location-other
Glacier:location-other
,:O
flow:O
into:O
the:O
main:O
Rongbuk:location-other
Glacier:location-other
.:O