Assertion: iceberg lettuce's leaf | /r/HasAspect | 1.3 grams of fiber
Facets:
value: according to the uie
type: OTHER
Source sentences:
text: One cup of raw leaf lettuce, either green leaf or red leaf varieties, has 1.3 grams of fiber, according to the UIE, and only 9 calories, making it a quality source of daily fiber.