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: Pioneer AVHX1600DVD USB DVD Mixtrax WVGA Touchscreen 6.1-Inch Player (Discontinued by Manufacturer)
Product description: Double-Din Car Stereo DVD Player with 6.1" Touchscreen, App Mode, MirrorLink and GPS Ready
Product feature: Pioneer AVH-X1600DVD In-Dash Receiver, MIXTRAX: MIXTRAX app Illumination Effects, Power Output: Peak 60 watts X 4 Channels / RMS 14 watts X 4 Channels, Wireless remote control included, CD/CD-R/CD-RW, MP3/WMA Playback/24FM/6AM presets
Product brand: Pioneer
Target attributes: Screen Size
Answer: attribute: screen size
value: 6.1-inch
source: product title
attribute: screen size
value: 6.1"
source: product description