Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: 12 oz. Dust-Pro Professional Air Duster (Cleaner) from Peca Products DP-512-1
Product description: Remove dust particles from camera equipment, lens, computer keyboards, and any location where delicate dust removal is desired. Acc-U-Sol Valve lets you control pressure from a gentle blow to a strong blast.
Product feature: For Precision Dust Removal, Moisture free, Compressed air duster, no residue, Non-flammable, non-ozone depleting propellant, Environmentally safe
Product price: $12.15
Product brand: PECA Products
Target attributes: Form
Answer: attribute: form
value: compressed air
source: product feature
attribute: form
value: air duster
source: product title