Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Aigo MP-E235 40GB Pocket Multimedia Center w/3.5" LCD
Product description: This Aigo MP-E235 is designed for media enthusiasts who want to take their videos, photos and music with them all on a stylish pocket-sized device. With its sleek black design, this MP-E235 measures only 5.5-inch long and is just ounces in weight, yet offers the largest hard drive capacity and color LCD screen for a product of its size! The latest in the Aigo line of Pocket Multimedia Centers offers an extensive list of features like, storage for up to 140 hours of video, 300,000 photos or 20,000 songs, Autosync with Windows Media Player 10 allows for easy transfer of media from the PC, and Transfer photos directly from digital cameras using the USB host port. This Aigo MP-E235 allows DVD-quality movie playback and photo viewing on the screen or on the TV, plus plays DivX, MPEG-4 and Windows Media Video files.
Product feature: Aigo MP-E235 40GB Pocket Multimedia Center General Features: 3.5-inch color screen, 320 x 240 pixel resolution 40 GB hard drive Built-in speaker and microphone, NTSC, PAL TV standards supported Music player plays up to 20,000 songs, Photo wallet stores up to 300,000 photos Video player plays up to 140 hours of video, Removable rechargeable Lithium-Ion battery
Product brand: Aigo
Target attributes: Screen Size
Answer: attribute: screen size
value: 3.5-inch
source: product feature
attribute: screen size
value: 3.5"
source: product title