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 ":".
After
a
successful
career
in
the
Army
he
left
in
1971
,
and
has
since
been
responsible
for
over
70
official
national
occasions
.
After:O
a:O
successful:O
career:O
in:O
the:O
Army:O
he:O
left:O
in:O
1971:O
,:O
and:O
has:O
since:O
been:O
responsible:O
for:O
over:O
70:O
official:O
national:O
occasions:O
.:O