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 ":".
The
MG34
and
MG42
were
used
as
vehicle
mounted
armament
for
defending
road
blocks
or
vehicle
checkpoints
.
The:O
MG34:product-weapon
and:O
MG42:product-weapon
were:O
used:O
as:O
vehicle:O
mounted:O
armament:O
for:O
defending:O
road:O
blocks:O
or:O
vehicle:O
checkpoints:O
.:O