Assertion: trench fever | /r/HasProperty | recognized
Facets:
value: during world war i
type: TEMPORAL
Source sentences:
text: During World War I, trench fever was recognized and precisely described as a distinct syndrome by several physicians.  
text: Although there was no recognized mortality, trench fever caused serious and prolonged disability to those it infected.
text: During World War I, trench fever was recognized and precisely described as a distinct syndrome by several physicians.