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 ":".
Following
the
inspection
of
recovered
pieces
of
the
aircraft
,
an
in-flight
fire
was
ruled
out
.
Following:O
the:O
inspection:O
of:O
recovered:O
pieces:O
of:O
the:O
aircraft:O
,:O
an:O
in-flight:O
fire:O
was:O
ruled:O
out:O
.:O