With no explanation, label each line with "O", "organization-company", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Arpey
was
executive
vice
president
of
operations
at
the
time
of
the
September
11
,
2001
terrorist
attacks
in
which
American
Airlines
lost
two
planes
.
Arpey:person-other
was:O
executive:O
vice:O
president:O
of:O
operations:O
at:O
the:O
time:O
of:O
the:O
September:O
11:O
,:O
2001:O
terrorist:O
attacks:O
in:O
which:O
American:organization-company
Airlines:organization-company
lost:O
two:O
planes:O
.:O