Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Cento Imported Olive Oil, 101-Ounce Can
Product description: From the fruit of the olive tree, this oil is solely derived by a natural process to deliver 100% natural and pure olive oil. Safety sealed. No preservatives. Product of Italy., 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 price: $23.99
Product brand: Cento
Target attributes: Size
Answer: attribute: size
value: None
source: None