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 ":".
Viewers
naturally
assumed
the
action
took
place
in
Los
Angeles
since
the
occasional
exterior
shots
were
of
actual
Los
Angeles
streets
rather
than
a
studio
backlot
.
Viewers:O
naturally:O
assumed:O
the:O
action:O
took:O
place:O
in:O
Los:location-GPE
Angeles:location-GPE
since:O
the:O
occasional:O
exterior:O
shots:O
were:O
of:O
actual:O
Los:location-GPE
Angeles:location-GPE
streets:O
rather:O
than:O
a:O
studio:O
backlot:O
.:O