With no explanation, label each line with "O", "person-athlete", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
His
2009
Tour
de
France
was
mainly
serving
as
a
domestique
for
Alberto
Contador
and
Lance
Armstrong
though
after
stage
15
Kloden
sat
4th
overall
.
His:O
2009:O
Tour:event-sportsevent
de:event-sportsevent
France:event-sportsevent
was:O
mainly:O
serving:O
as:O
a:O
domestique:O
for:O
Alberto:person-athlete
Contador:person-athlete
and:O
Lance:person-athlete
Armstrong:person-athlete
though:O
after:O
stage:O
15:O
Kloden:O
sat:O
4th:O
overall:O
.:O