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 ":".
His
scientific
,
educational
and
organizational
work
has
been
acknowledged
by
several
national
and
scientific
awards
.
His:O
scientific:O
,:O
educational:O
and:O
organizational:O
work:O
has:O
been:O
acknowledged:O
by:O
several:O
national:O
and:O
scientific:O
awards:O
.:O