With no explanation, label each line with "location-GPE", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Zappos
.com
is
an
American
online
shoe
and
clothing
retailer
based
in
Las
Vegas
,
Nevada
,
United
States
.
Zappos:organization-company
.com:O
is:O
an:O
American:location-GPE
online:O
shoe:O
and:O
clothing:O
retailer:O
based:O
in:O
Las:location-GPE
Vegas:location-GPE
,:O
Nevada:location-GPE
,:O
United:location-GPE
States:location-GPE
.:O