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: Imation DVD-R 16x 4.7GB 25pk Spindle
Product description: 16x DVD-R 4.7GB 25 Pack Spindle
Product feature: DVD-R write-once single-sided speed 16x capacity 4.7GB 25-Pack spindle., SOLD BY THE PK
Product price: $10.90
Product brand: Imation
Target attributes: Capacity
Answer: attribute: capacity
value: 4.7gb
source: product title
attribute: capacity
value: 4.7gb
source: product feature
attribute: capacity
value: 4.7gb
source: product description