Assertion: ballpoint pen | /r/ObjectUse | used by the military
Facets:
value: during world war ii
type: TEMPORAL
value: widely
type: DEGREE
value: because of ability
type: CAUSE
value: because of its toughness
type: CAUSE
Source sentences:
text: Their successful performance for the Royal Air Force brought the Biro pen into the limelight, and during World War II the ballpoint pen was widely used by the military because of its toughness and ability to survive the battle environment.