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 ":".
It
is
the
third
largest
county
in
Texas
by
land
area
.
It:O
is:O
the:O
third:O
largest:O
county:O
in:O
Texas:location-GPE
by:O
land:O
area:O
.:O