With no explanation, label each line with "O", "organization-politicalparty", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
Kurdistan
Workers
Party
(
PKK
)
claimed
responsibility
.
The:O
Kurdistan:organization-politicalparty
Workers:organization-politicalparty
Party:organization-politicalparty
(:O
PKK:organization-politicalparty
):O
claimed:O
responsibility:O
.:O