With no explanation, label each line with "location-GPE", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
He
became
a
major
with
the
15th
Cavalry
in
1907
and
was
appointed
as
commander
for
Fort
Ethan
Allen
the
next
year
.
He:O
became:O
a:O
major:O
with:O
the:O
15th:organization-other
Cavalry:organization-other
in:O
1907:O
and:O
was:O
appointed:O
as:O
commander:O
for:O
Fort:location-GPE
Ethan:location-GPE
Allen:location-GPE
the:O
next:O
year:O
.:O