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: Obrien Youth Neoprene Vest (Blue, 50-90 - Pound)
Product description: form fitting neoprene vest designed for all active watersports. Provides great range of motion, flexibility and stretchability. Popular Obrien logo graphics in all the popular sizes.
Product feature: neoprene, Rapid dry Qubicfit fabric, lightweight, with stretchability and soft foam for better comfortable fit., front zip closure, 2 waist belts,, wide arm holes for greater range of motion and maneuverability and comfort., designed with stretchability for a more custom fit., USCG approved
Product brand: O'Brien
Target attributes: Construction
Answer: attribute: construction
value: foam
source: product feature
attribute: construction
value: youth
source: product title