Assertion: copper sulfate | /r/HasProperty | the most used
Facets:
value: most widely
type: DEGREE
value: due to its relatively low cost
type: CAUSE
value: due to its availability
type: CAUSE
value: in the country
type: LOCATION
Source sentences:
text: Copper sulphate is the most widely used, and most economical algae control available
text: Copper sulfate, a product whose composition hasn’t changed significantly in the last half century, is perhaps the most widely used algaecide in the country due to its availability and its relatively low cost.