Assertion: fluoride's level | /r/CapableOf | fall in the range
Facets:
value: according to the american dental association
type: OTHER
value: between 1.2 ppm
type: OTHER
value: for decades
type: TEMPORAL
value: between 0.7 parts per million
type: OTHER
Source sentences:
text: For decades the optimal level of fluoride in drinking water fell in the range between 0.7 parts per million (ppm) and 1.2 ppm, according to the American Dental Association (ADA).