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 ":".
Nails
were
treasured
in
ancient
Hawaii
,
which
lacked
metal
smelting
technology
.
Nails:O
were:O
treasured:O
in:O
ancient:O
Hawaii:location-GPE
,:O
which:O
lacked:O
metal:O
smelting:O
technology:O
.:O