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: BLU Dash 4.0 D270i Unlocked Dual SIM Phone with Dual-Core 1GHz Processor, Android 4.0 ICS, 3G HSPA, and High Res LCD Screen - U.S. Warranty (Black)
Product description: Best priced mobile device with Android Ice Cream Sandwich powered by a Qualcomm 1GHz Dual Core proccessor. The Dash 4.0 is the most affordable device with a high resolution 4" Display. With 4GB internal memory, there is plenty of space for apps,music, and videos with expandable memory up to 32GB.
Product feature: Unlocked Dual SIM 4.0-Inch High Resolution WVGA Display, Qualcomm Dual Core 1 GHz Processor, Android 4.0 Ice Cream Sandwich, 3G 850/2100 HSDPA 7.2 Mbps, Micro SD up to 32G, 5MP Camera with LED Flash, Front Camera VGA for Video Calling Support, 3.5mm Audio Jack,FM Radio, MP3 Player, MP4 Player, 4GB Internal Memory with 512MB RAM
Product brand: BLU
Target attributes: Lens Quantity
Answer: attribute: lens quantity
value: None
source: None