Assertion: mustard gas | /r/Causes | serious casualties
Facets:
value: in july
type: TEMPORAL
value: to the british
type: TRANSITIVE-OBJECT
Source sentences:
text: Mustard gas caused serious casualties to the British in July 1917 but there seems to be no evidence to support the claim by Beumelburg and Hanslian that it caused the start of the 3rd Battle of Ypres to be postponed for a fortnight.