Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Titleist 50 Velocity AAAA Near Mint Used Golf Balls (Packaging May Vary)
Product description: Near Very playable, good condition golf balls, may include moderate surface blemishes, slight scuffs, minor discoloration which will not affect the trajectory, distance or flight path of the ball. Ball will not have cuts. Higher grade Practice and X-OUT models may be included. These golf balls will include player(sharpie or felt pen) markings, team and corporate logos.
Product feature: 50 TITLEIST VELOCITY AAAA NEAR MINT USED GOLF BALLS (Packaging May Vary)
Product price: $34.97
Product brand: Titleist
Target attributes: Construction
Answer: attribute: construction
value: None
source: None