With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
He
went
on
collecting
voices
of
notable
personalities
,
especially
speeches
of
political
leaders
and
politicians
,
and
narrations
of
authors
'
own
works
.
He:O
went:O
on:O
collecting:O
voices:O
of:O
notable:O
personalities:O
,:O
especially:O
speeches:O
of:O
political:O
leaders:O
and:O
politicians:O
,:O
and:O
narrations:O
of:O
authors:O
':O
own:O
works:O
.:O