Assertion: argon | /r/HasProperty | discovered at the end of the 19th century
Facets:
value: along with other noble gases
type: OTHER
value: as an amazing coincidence
type: OTHER
value: by william ramsay
type: OTHER
Source sentences:
text: As an amazing coincidence, argon, along with other noble gases, was discovered at UCL by William Ramsay at the end of the 19th century!