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 ":".
The
team
had
previously
flown
with
the
Percival
Provost
.
The:O
team:O
had:O
previously:O
flown:O
with:O
the:O
Percival:product-airplane
Provost:product-airplane
.:O