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
Fernando
Formation
is
a
Pliocene
stratigraphic
unit
in
California
.
The:O
Fernando:O
Formation:O
is:O
a:O
Pliocene:O
stratigraphic:O
unit:O
in:O
California:location-GPE
.:O