Assertion: powered aircraft | /r/CapableOf | become practical
Facets:
value: for artillery spotting
type: PURPOSE
value: a decade later
type: TEMPORAL
value: for reconnaissance
type: PURPOSE
value: for attacks against ground positions
type: PURPOSE
Source sentences:
text: Only a decade later, at the start of World War I, heavier-than-air powered aircraft had become practical for reconnaissance, artillery spotting, and even attacks against ground positions.