Assertion: incendiary bomb | /r/HasProperty | dropped on city
Facets:
Source sentences:
text: When dropped on built-up areas such as towns and cities, the incendiary bomb proved to be one of the most effective weapons to be used in the Second World War.
text: When dropped on built-up areas such as towns and cities, the incendiary bomb proved to be one of the most effective weapons to be used by the German Air Force