With no explanation, label each line with "product-airplane", "O", "building-airport", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-hospital" preceded by ":".
In
August
1953
a
daily
Southwest
DC-3
was
scheduled
SFO
to
LAX
in
3
hours
and
45
minutes
with
eight
stops
.
In:O
August:O
1953:O
a:O
daily:O
Southwest:product-airplane
DC-3:product-airplane
was:O
scheduled:O
SFO:building-airport
to:O
LAX:building-airport
in:O
3:O
hours:O
and:O
45:O
minutes:O
with:O
eight:O
stops:O
.:O