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: Animal Alley 15.5 inch Polar Bear - White by Unknown
Product description: Oversized 20" Plush Sitting Polar Bear
Product feature: Sitting Polar Bear 20", Stands 20" seated, Plush and soft, Polar Bear
Product price: $49.84
Product brand: Geoffrey
Target attributes: Form
Answer: attribute: form
value: bear
source: product description
attribute: form
value: bear
source: product feature
attribute: form
value: bear
source: product title