Assertion: magnesium sulfate's magnesium | /r/ObjectUse | used for german military aircraft
Facets:
Source sentences:
text: Historically, magnesium was one of the main aerospace construction metals and was used for German military aircraft as early as World War I and extensively for German aircraft in World War II.
text: Historically, magnesium was one of the main aerospace construction metals and was used for German military aircraft as early as World War I and extensively for German aircraft in World War II.