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: Tremco Vulkem 45 SSL One-Part Semi-Self Leveling Polyurethane Sealant (Buff)
Product description: Tremco Vulkem 45 SSL Polyurethane is a one-part moisture curing, low modulus polyurethane sealant especially developed for sealing joints in level and/or slightly sloped surfaces. Exceptional wear and tear resistance in high traffic areas. High adhesive strength to common construction materials make Tremco Vulkem 45 SSL the choice for a wide variety of requirements. Use Vulkem 45 SSL in expansion joints in sidewalks, parking decks, plazas, floors and other horizontal surfaces with slopes of up to six percent. Light tooling can be done immediately after application if necessary. Suitable for use in continuous water immersion.
Product feature: Available in multiple colors, No Gassing, Quick Skinning, One-Part, Low Modulus, Semi-Self Leveling Formula, Suitable for slopes up to 6%, Exceptional wear and tear resistance for high traffic areas, 29 fl. oz. (850 ml)
Product price: $27.95
Product brand: Tremco
Target attributes: Type
Answer: attribute: type
value: None
source: None