Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: LB1 High Performance New Micro SDHC Card 16GB for T-Mobile Nokia Lumia 521 High Speed Class 10 Micro SD Flash Memory Card
Product description: When you need High Speed 16GB Micro SDHC Memory Card for your Laptop Notebook Desktop Computer Smartphone Tablet or Digital Camera, you need the power of LB1 High Performance 16GB Micro SDHC Memory Card. It is the most cost effective 16GB Micro SDHC Memory Card available on the market today., Copyright © 2011 LB1 HIGH PERFORMANCE All Rights Reserved.
Product feature: Strongrr MicroSDHC Class 10 Memory Card is high-performance memory card features ultra fast speed for transferring music, photos, and videos and capture Full HD video. This reliable memory card ensures your files remain safe during life's little mishaps., Designed for the Latest Smartphones and Tablets - Fast read speeds keep up with the demands of mobile apps and save you time when downloading or moving memory, Fast Read and Write Speeds for Better Performance - Fast read speeds make transferring photos, videos, music, and other media files to your smartphone or tablet extremely quick, Huge Storage Capacity for Thousands of Photos and MP3s - The card's generous 16 GB capacity holds up to 9,310 photos (8-megapixel), 270 minutes of HD video, or 3,740 songs. This means you can download and store more media files and apps on your smartphone or tablet., 100% Customer Satisfaction. Fast Same-Day Shipping by 12:00 PM PDT. 30-Day Money Back Guarantee. Exclusive $100000 Product Protection Plan! Satisfies Government - School - Health care enterprise and Corporate account purchase order requirements.
Product brand: LB1 High Performance
Target attributes: Format
Answer: attribute: format
value: sdhc
source: product title
attribute: format
value: sdhc
source: product description
attribute: format
value: microsdhc
source: product feature
attribute: format
value: sd
source: product title