Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: MAH 12 Inch Brass Ship Captain Telescope/Spyglass with Wooden Box. C-3132
Product description: 12 Inch Brass Ship Captain Telescope with Box. High Class Antique Reproduction This Traditional Brass Telescope These beautifully crafted, hand-polished, solid brass telescope have been manufactured . All models provide, so can be used for terrestrial viewing as well as for basic observations. It comes with highly finished wooden Box. Size Approx.: 30 cm Tall x 3.5 cm Dia (Telescope) 13 cm Length x 6 cm Wide x 4.5 cm Height (Box) BRAND-MAH
Product feature: Brass Telescope is the best gift for your family and friends., 100% Brand New and high quality., Portable design, convenient to carry, Made of Solid Brass,Gift for some one you love., Size:- 30 cm Tall x 3.5 cm Dia (Telescope), Size:- 13 cm Length x 6 cm Wide x 4.5 cm Height (Wooden Box)
Product price: $25.93
Product brand: MAH
Target attributes: Focal Ratio
Answer: attribute: focal ratio
value: None
source: None