Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Bellwether 60 In. x 30 In. Alcove Bah with Integral Apron, Tile Flange, and Right-Hand Drain, White
Product description: Kohler K-838-0 Bellwether 60" x 30" Bath with integral apron and right-hand drain, WhiteAn update of a bestseller, Bellwether features a clean, contemporary design in a popular, industry-standard size. Its integral apron simplifies alcove installation, while a low step-over threshold allows for comfortable entry and exit. Bellwether's wide ledges provide storage space for towels, toiletries, and other items. Crafted from enameled cast iron, this bath offers years of reliable performance.Kohler K-838-0 Bellwether 60" x 30" Bath with integral apron and right-hand drain, White Features: 60 in. L x 30-1/4 in. W x 14 in. H Clean lines and an integral apron create a comfortable bathing experience 14-inch step-over threshold for easy entry and exit Standard size simplifies installation in remodels Tile flange helps prevent water from seeping behind wall and simplifies alcove installation Safeguard slip-resistant surface on bath floor Wide ledges for extra storage space Right-hand drain, The updated, clean lines of the Bellwether Bath coordinate with a variety of products. Made of KOHLER Cast Iron, it incorporates an integral apron and 3-sided flange for ease of installation.
Product feature: Clean lines and an integral apron create a comfortable bathing experience, 14 in. Step-over threshold for easy entry and exit, Tile flange helps prevent water from seeping behind wall and simplifies alcove installation, Safeguard slip-resistant surface on bath floor, Wide ledges for extra storage space.Material:KOHLER enameled cast iron., 60-Inch Long by 30-Inch Wide by 14-Inch High Bath, 14-Inch Step-Over Height For Easy Entrance and Exit, Wide Ledges For Functional Storage Space, SafeGuard Slip-Resistant Surface, Guaranteed Not To Chip, Crack, or Flex
Product brand: Kohler
Target attributes: Material
Answer: attribute: material
value: cast iron
source: product feature
attribute: material
value: cast iron
source: product description