Assertion: pigeon's number | /r/HasProperty | vast
Facets:
Source sentences:
text: The numbers and weights involved are vast: during the Battle of Verdun, for example, some 32 million shells were fired, while the British barrage preceding the Battle of the Somme fired some 1.5 million shells (in total, nearly 250 million shells were used by the British army and navy during the war).