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 ":".
The
field
is
located
about
three
miles
north
of
the
city
of
Pratt
,
a
community
of
about
7,000
,
which
was
the
only
urban
area
readily
accessible
to
personnel
of
the
field
.
The:O
field:O
is:O
located:O
about:O
three:O
miles:O
north:O
of:O
the:O
city:O
of:O
Pratt:location-GPE
,:O
a:O
community:O
of:O
about:O
7,000:O
,:O
which:O
was:O
the:O
only:O
urban:O
area:O
readily:O
accessible:O
to:O
personnel:O
of:O
the:O
field:O
.:O