Assertion: cesium | /r/HasProperty | discovered by kirchhoff
Facets:
value: spectroscopically
type: MANNER
value: in mineral water from durkheim
type: LOCATION
value: in 1860
type: TEMPORAL
Source sentences:
text: Cesium was discovered spectroscopically by Bunsen and Kirchhoff in 1860 in mineral water from Durkheim.