Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Raven's Brew Organic Whole Bean Coffee, Dharma, 12 Ounce (Pack of 2)
Product description: Raven's brew's proprietary blends are unique in the coffee world, as well as quite distinct one from the other. We design these coffees for different occasions, different times of day, and even different levels of caffeine content. They are designed, above all, to pander to the personality of the palate. There is simply, and properly, no accounting for taste, and we strive to present panoply of offerings so that any individual can find the blend to synchronize with his or her tastes and ideas of how a coffee should impress the senses., Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
Product brand: Raven's Brew
Target attributes: Roast
Answer: attribute: roast
value: None
source: None