Assertion: lamp's gas | /r/HasProperty | 99.5% neon
Facets:
value: at a pressure of 1–20 torrs
type: TEMPORAL
value: typically
type: DEGREE
Source sentences:
text: The gas is typically a Penning mixture, 99.5% neon and 0.5% argon, which has lower striking voltage than pure neon, at a pressure of 1–20 torrs (0.13–2.67 kPa).