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: Samsung S3600 Unlocked Cell Phone - International Version with No U.S. Warranty (Silver)
Product description: SAMSUNG's S3600 offers a stunning impression at first sight. The use of premium brushed metal highlights the sleek and polished design. Opening the mobile reveals a large glossy screen and ergonomic keypad for easy access to a full range of features that satisfy your communication, multimedia, connectivity, and security needs.
Product feature: Quad Band 850/900/1800/1900, 1.3 Megapixel Camera, A2DP, Bluetooth, Calendar, Camera, Clamshell Form, Edge, Email Client, FM Radio, High-Speed Data GPRS, Megapixel Camera, Memory Card Slot, MP3, Speaker Phone, Video Clip, This cell phone may not include a US warranty as some manufacturers do not honor warranties for international version phones. Please contact the seller for specific warranty information.
Product brand: Samsung
Target attributes: Display Resolution
Answer: attribute: display resolution
value: None
source: None