Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Safavieh Mercer Collection Vanessa Storage Ottoman, Taupe
Product description: Organic in color and fabric, the curvy Safavieh Mercer Collection Vanessa Taupe Storage Ottoman is a pretty and practical addition to any space. Taupe linen is used on its base and luxuriously button-tufted lid, which lifts to reveal hidden storage space inside. Fashion-right nickel nail head detailing adds a designer touch. No assembly required, this ottoman measures 23.6" x 23.6" x 16.1".
Product feature: 100% Linen, The taupe and beige upholstery of this ottoman will give your home a chic accent, This ottoman features storage space measuring 17.3" in diameter and 11.4" deep, Crafted of sturdy wood and upholstered in linen fabric, Perfect for the living room, den, bedroom or anywhere you want to add modern style, No assembly required, this ottoman measures 23.6" x 23.6" x 16.1"
Product price: $28.40
Product brand: Safavieh
Target attributes: Material
Answer: attribute: material
value: fabric
source: product description
attribute: material
value: linen
source: product feature
attribute: material
value: fabric
source: product feature
attribute: material
value: linen
source: product description