Assertion: sunscreen's spf | /r/HasProperty | abbreviation
Facets:
value: for "sun protection factor
type: PURPOSE
Source sentences:
text: SPF, an abbreviation for sun-protection factor, is a number such as 15, 30, or 50 that indicates the degree of sunburn protection provided by sunscreens.
text: SPF "or sun protection factor" is another label you need to pay attention to (obviously!)
text: SPF is an abbreviation for "sun protection factor.