With no explanation, label each line with "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
has
participated
in
memorials
to
Kahane
.
He:O
has:O
participated:O
in:O
memorials:O
to:O
Kahane:person-politician
.:O