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
returned
to
England
in
1857
to
become
Commanding
Officer
of
2nd
Bn
6th
(
Warwickshire
)
Regiment
.
He:O
returned:O
to:O
England:location-GPE
in:O
1857:O
to:O
become:O
Commanding:O
Officer:O
of:O
2nd:organization-other
Bn:organization-other
6th:organization-other
(:organization-other
Warwickshire:organization-other
):organization-other
Regiment:organization-other
.:O