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: Sony Alpha a5100 Wi-Fi Digital Camera & 16-50mm 55-210mm f/4.5-6.3 OSS Zoom Lens
Product description: This bundle includes the a5100 camera body, two premium E-mount lenses. Capture that crucial moment with ultra-fast autofocusing, 179 AF points and 6 fps. This lightweight camera delivers 24.3MP of detail even in low light, and you can share photos right to your smartphone through built-in Wi-Fi. Record Full HD Video or flip over the 180; tilt screen for perfectly framed selfies.
Product feature: 5100 camera body (ILCE-5100), 16-50mm F3.5-5.6 lens (SEL1650), 55-210mm F4.5-6.3 lens (SEL55210), Rechargeable Battery (NP-FW50)
Product price: $769.95
Product brand: Sony
Target attributes: Camera Weight
Answer: attribute: camera weight
value: None
source: None