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: Profile Design Altair 52 Full Carbon Clincher Rear Wheel
Product description: Profile Design Altair Full Carbon Clincher 52 Rear Wheel Wheel Size: 700c Rim: Profile Design Altair 52 Rim Color: Black Hub/Brake Compatibility: Rim Brake Tire Type: Tubular Cassette Body Type: Shimano 9/10/SRAM Rear Hub Spacing: 130 mm Hub Color: Black Rear Axle Type: 10x1 Skewer Included: Yes Spoke Info: Sapim CX Sprint Spoke Color: Black ISO Diameter: 622 / road / 29" Rim Material: Carbon Valve: Presta Valve Length: Long 56-74mm Rear Wheel Type: Road Weight: 1,443.0 g
Product feature: Altair 52 Full Carbon Clincher Rear 700c x 24H Rear, Proprietary carbon fiber 52mm section full carbon clincher rim. Precision machined alloy hubs with sealed cartridge bearings and custom depth flanges for extra stiffness, Hand-built assembly. Sapim CX Sprint spokes with hidden nipples for additional aerodynamics, Color: UD carbon finish with colored decals, black hubs and black spokes. Weight 930 grams
Product brand: Profile Design
Target attributes: Size
Answer: attribute: size
value: 700c
source: product description
attribute: size
value: 700c
source: product feature