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 ":".
In
1943
,
he
went
overseas
to
the
European
Theater
of
Operations
as
operations
officer
of
the
401st
Bombardment
Group
.
In:O
1943:O
,:O
he:O
went:O
overseas:O
to:O
the:O
European:location-GPE
Theater:O
of:O
Operations:O
as:O
operations:O
officer:O
of:O
the:O
401st:O
Bombardment:organization-other
Group:organization-other
.:O