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: Cort Action 5B-TB 5-String Bass Guitar,Trans Blue Finish
Product description: Cort Action 5B-TB 5-String Bass Guitar,Trans Blue Finish: Full 34" scale for full range of playing; Maple neck for a slim fast action neck; Die cast machine heards for precise tuning; Mighty Mite pickups for that deep resonate sound
Product feature: Full 34" scale for full range of playing, Maple neck for a slim fast action neck, Die cast machine heards for precise tuning, Mighty Mite pickups for that deep resonate sound
Product brand: Cort
Target attributes: Number of Strings
Answer: attribute: number of strings
value: 5-string
source: product title
attribute: number of strings
value: 5-string
source: product description