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
actual
yield
over
the
period
2003-2007
was
26
hectoliters
per
hectare
(
278
US
gallons
per
acre
)
.
The:O
actual:O
yield:O
over:O
the:O
period:O
2003-2007:O
was:O
26:O
hectoliters:O
per:O
hectare:O
(:O
278:O
US:location-GPE
gallons:O
per:O
acre:O
):O
.:O