With no explanation, label each line with "O", "product-other", "organization-other", "location-GPE", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other" or "art-painting" preceded by ":".
Hydra
(
)
(
sometimes
spelled
Ydra
)
was
a
Greek
destroyer
of
the
,
which
served
with
the
Hellenic
Navy
during
the
early
stages
of
the
Second
World
War
.
Hydra:product-other
(:O
):O
(:O
sometimes:O
spelled:O
Ydra:product-other
):O
was:O
a:O
Greek:location-GPE
destroyer:O
of:O
the:O
,:O
which:O
served:O
with:O
the:O
Hellenic:organization-other
Navy:organization-other
during:O
the:O
early:O
stages:O
of:O
the:O
Second:event-attack/battle/war/militaryconflict
World:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
.:O