With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Traditional
inhabitants
of
the
valley
are
Tanana
Athabaskans
of
Alaskan
Athabaskans
.
Traditional:O
inhabitants:O
of:O
the:O
valley:O
are:O
Tanana:location-GPE
Athabaskans:O
of:O
Alaskan:O
Athabaskans:O
.:O