With no explanation, label each line with "O", "organization-government/governmentagency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
After
graduation
,
he
tried
at
the
National
Defence
Academy
,
but
was
not
selected
.
After:O
graduation:O
,:O
he:O
tried:O
at:O
the:O
National:organization-government/governmentagency
Defence:organization-government/governmentagency
Academy:organization-government/governmentagency
,:O
but:O
was:O
not:O
selected:O
.:O