Assertion: polonium | /r/HasProperty | grown at specific places
Facets:
value: as a contaminant
type: MANNER
value: in uranium ores
type: LOCATION
Source sentences:
text: Polonium has been found in tobacco smoke from tobacco leafs grown at some specific places, as a contaminantand in uranium ores.
text: Polonium has been found in tobacco smoke from tobacco leaves grown at some specific places, as a contaminant  and in uranium ores.