Assertion: fluoride | /r/AtLocation | foodstuff
Facets:
value: from production of phosphate fertilizers
type: OTHER
value: in the air
type: LOCATION
Source sentences:
text: It should be noted that fluoride is also found in some foodstuffs and in the air (mostly from production of phosphate fertilizers or burning of fluoride-containing fuels), so the amount of fluoride people actually ingest may be higher than assumed.