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: 600GB Sas 15K Rpm 3.5IN 6GBPS Hot-swap HDD
Product description: IBM storage solutions and industry expertise can help you gain a competitive edge. Leverage IBM's advanced capabilities to manage data growth, protect data and gain actionable insights.
Product feature: SAS, 600GB, 15000 rpm
Product price: $9.99
Product brand: IBM
Target attributes: Form Factor
Answer: attribute: form factor
value: 3.5in
source: product title