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: Wd1600aajs-00L7a0 Western Digital 160Gb 7200Rpm Sata-300 3.5Inch Inte
Product description: Wd1600aajs-00L7a0 Western Digital 160Gb 7200Rpm Sata-300 3.5Inch Inte
Product feature: Wd1600aajs-00L7a0 Western Digital 160Gb 7200Rpm Sata-300 3.5Inch Inte
Product price: $14.99
Product brand: Western Digital
Target attributes: Rotational Speed
Answer: attribute: rotational speed
value: 7200rpm
source: product title
attribute: rotational speed
value: 7200rpm
source: product feature
attribute: rotational speed
value: 7200rpm
source: product description