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 ":".
This
was
the
cause
of
the
British
Airways
Flight
38
accident
.
This:O
was:O
the:O
cause:O
of:O
the:O
British:product-airplane
Airways:product-airplane
Flight:product-airplane
38:product-airplane
accident:O
.:O