With no explanation, label each line with "O", "location-mountain", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Within
this
nearly
mile-wide
separation
resides
a
deep
glacially
carved
canyon
called
``
Avalanche
Canyon
``
.
Within:O
this:O
nearly:O
mile-wide:O
separation:O
resides:O
a:O
deep:O
glacially:O
carved:O
canyon:O
called:O
``:O
Avalanche:location-mountain
Canyon:location-mountain
``:O
.:O