Assertion: beryllium | /r/HasProperty | little industrial demand
Facets:
value: until 1940s
type: TEMPORAL
value: until the 1930s
type: TEMPORAL
value: for it
type: OTHER
Source sentences:
text: Beryllium is one of the lightest and stiffest metals, but there was little industrial demand for it until the 1930s and 1940s when the aerospace, defense, and nuclear sectors began using beryllium and its compounds.