With no explanation, label each line with "organization-other", "location-GPE", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
World
War
I
,
in
which
the
United
States
and
its
allies
fought
-
among
other
Central
Powers
-
the
German
Empire
,
raised
concern
about
the
German
threat
to
the
United
States
.
World:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
I:event-attack/battle/war/militaryconflict
,:O
in:O
which:O
the:O
United:location-GPE
States:location-GPE
and:O
its:O
allies:O
fought:O
-:O
among:O
other:O
Central:organization-other
Powers:organization-other
-:O
the:O
German:location-GPE
Empire:location-GPE
,:O
raised:O
concern:O
about:O
the:O
German:location-GPE
threat:O
to:O
the:O
United:location-GPE
States:location-GPE
.:O