With no explanation, label each line with "O", "product-weapon", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Despite
this
,
the
devastation
caused
by
Greek
fire
in
combat
is
indisputable
.
Despite:O
this:O
,:O
the:O
devastation:O
caused:O
by:O
Greek:product-weapon
fire:product-weapon
in:O
combat:O
is:O
indisputable:O
.:O