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: Straight Talk Samsung Galaxy S5 Verizon unlocked "Electric Blue", runs on Verizon 4G XLTE network via Straight Talk's $45 Unlimited plan. Phone is pre-registered & sim card is installed.
Product description: New Open Box Samsung Galaxy S5 Verizon/ Straight Talk,"Electric Blue Runs on Straight Talk's $45 per month unlimited plan, via Via Verizon's 4G XLTE Towers. Phone is pre-registered and sim card is installed.
Product feature: Straight Talk Pre-registered, 4g lte sim-card installed on your behalf making setup hassle free, detailed instructions to activate your phone, Rare Electric Blue Color
Product brand: Straight Talk
Target attributes: Broadband Generation
Answer: attribute: broadband generation
value: 4g lte
source: product feature
attribute: broadband generation
value: 4g
source: product title
attribute: broadband generation
value: 4g
source: product description