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 ":".
A
total
of
60
Allied
aircraft
were
lost
on
the
first
day
,
primarily
on
the
ground
.
A:O
total:O
of:O
60:O
Allied:product-airplane
aircraft:product-airplane
were:O
lost:O
on:O
the:O
first:O
day:O
,:O
primarily:O
on:O
the:O
ground:O
.:O