With no explanation, label each line with "O", "person-politician", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
An
unsuccessful
attempt
was
made
on
the
life
of
Barham
Salih
in
April
2002
by
Ansar
al-Islam
.
An:O
unsuccessful:O
attempt:O
was:O
made:O
on:O
the:O
life:O
of:O
Barham:person-politician
Salih:person-politician
in:O
April:O
2002:O
by:O
Ansar:person-other
al-Islam:person-other
.:O