With no explanation, label each line with "location-GPE", "O", "product-weapon", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
When
Italy
invaded
Albania
in
April
1939
,
the
``
Centauro
``
was
equipped
with
L3/33
and
L3/35
tankettes
.
When:O
Italy:location-GPE
invaded:O
Albania:location-GPE
in:O
April:O
1939:O
,:O
the:O
``:O
Centauro:organization-other
``:O
was:O
equipped:O
with:O
L3/33:product-weapon
and:O
L3/35:product-weapon
tankettes:product-weapon
.:O