With no explanation, label each line with "location-GPE", "O", "event-protest", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Saudi
Arabia
's
diplomatic
relations
with
Iraq
were
relatively
cordial
by
the
time
the
Iranian
Revolution
climaxed
in
1979
.
Saudi:location-GPE
Arabia:location-GPE
's:O
diplomatic:O
relations:O
with:O
Iraq:location-GPE
were:O
relatively:O
cordial:O
by:O
the:O
time:O
the:O
Iranian:event-protest
Revolution:event-protest
climaxed:O
in:O
1979:O
.:O