With no explanation, label each line with "person-soldier", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Cameron
was
then
promoted
to
colonel
and
given
command
of
the
34th
,
both
on
June
15
.
Cameron:person-soldier
was:O
then:O
promoted:O
to:O
colonel:O
and:O
given:O
command:O
of:O
the:O
34th:O
,:O
both:O
on:O
June:O
15:O
.:O