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: Atlas Sound SM42T-B 4" 2-Way Weather Resistant Speaker System With 70.7V/100V-16W Transformer
Product description: Use surface-mount Atlas Sound SM42T Series loudspeaker systems for commercial, professional and residential applications or where high-fidelity sound and weather-resistance is desired. Full-range frequency response makes these systems ideal for indoor and outdoor installation, in monaural and stereo foreground or background music systems, and for applications in boutiquesshops, restaurantscafes, corporate AV applications and houses of worship. Multi-position, C-shaped mounting bracket and rugged construction provide optimum installation flexibility and assurance of long-term service.
Product feature: 1 Ferrofluid Cooled Dome Tweeter Highly Efficient 4 Polypropylene Woofer., Atlas Sound POLYGUARD High Frequency Protection Circuit., Weather-Resistant Construction For Year-round Indoor or Outdoor Use., TRX WAVEGUIDE Constant Directivity Style High Frequency Wave Guide System., Screwdriver Adjustable 16-Watt 70.7V100V Transformer may be bypassed for 8-ohm operation. Sold in Pairs
Product price: $26.24
Product brand: Atlas Sound
Target attributes: Use
Answer: attribute: use
value: None
source: None