With no explanation, label each line with "location-GPE", "O", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
was
selected
for
the
Ethiopian
marathon
team
at
the
2012
Olympic
Games
,
but
he
could
not
repeat
his
earlier
form
and
dropped
out
of
the
Olympic
race
.
He:O
was:O
selected:O
for:O
the:O
Ethiopian:location-GPE
marathon:O
team:O
at:O
the:O
2012:O
Olympic:event-sportsevent
Games:event-sportsevent
,:O
but:O
he:O
could:O
not:O
repeat:O
his:O
earlier:O
form:O
and:O
dropped:O
out:O
of:O
the:O
Olympic:event-sportsevent
race:O
.:O