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: 1000 4" mixed colored 10 colors plastic plant stake labels tags pot markers multi-colored
Product description: 1000 total 4" plastic colored plant stake labels 100 each of the following colors: Light Blue Lavender Yellow Green Orange Red Dark Blue White Pink Gray Each label is 4" long x 5/8" wide. Easy to write on with most markers
Product feature: 10 colors, 100 each color, Made in USA
Product price: $9.40
Product brand: AAAmercantile
Target attributes: Material
Answer: attribute: material
value: plastic
source: product title
attribute: material
value: plastic
source: product description