Assertion: neon | /r/HasProperty | discovered
Facets:
value: by freezing the chemical element argon
type: MANNER
Source sentences:
text: Neon was discovered when Ramsay chilled a sample of air until it became a liquid, then warmed the liquid and captured the gases as they boiled off.
text: Neon was discovered by freezing the chemical element argon using liquefied air.