With no explanation, label each line with "location-GPE", "product-airplane", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
All
of
the
initial
eight
Apaches
are
based
in
the
United
States
.
All:O
of:O
the:O
initial:O
eight:O
Apaches:product-airplane
are:O
based:O
in:O
the:O
United:location-GPE
States:location-GPE
.:O