With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
These
were
performed
for
the
Queen
prior
to
the
main
flypast
.
These:O
were:O
performed:O
for:O
the:O
Queen:O
prior:O
to:O
the:O
main:O
flypast:O
.:O