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: Silverstone Tek Aluminum/Steel ATX Media Center/HTPC Case with 2x USB 3.0 Front I/O Ports LC10S-E-USB3.0 - Silver
Product description: Build to perform, the LC10-E has cooling configuration rarely seen in HTPC cases. The two rear 8025 fans configuration provides ample airflow to easily handle the heat from a Core2 Quad processor. But having great thermal performance did not compromise the poise of LC10-E as our engineers created a front panel that is both elegant and devoid of any unsightly holes. This philosophy of no compromises again results in a HTPC case of unparalleled combination of style and function, now with 2X USB3.0 front ports.
Product feature: Home theater component styling, Stealth optical drive slot, Next generation cooling performance, Abundant front I/O ports
Product brand: SilverStone Technology
Target attributes: Type
Answer: attribute: type
value: case
source: product description
attribute: type
value: cases
source: product description
attribute: type
value: case
source: product title