With no explanation, label each line with "product-airplane", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
During
this
time
four
gyroplanes
(
type
Autogyro
MTO
Sport
)
where
deployed
to
be
used
as
a
basic
training
equipment
.
During:O
this:O
time:O
four:O
gyroplanes:O
(:O
type:O
Autogyro:product-airplane
MTO:product-airplane
Sport:product-airplane
):O
where:O
deployed:O
to:O
be:O
used:O
as:O
a:O
basic:O
training:O
equipment:O
.:O