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: Montana West Ladies Flip Flops Turquoise Stone Pewter Cross Concho Coffee
Product description: Montana West brand spiritual collection western women's flip flops. Wide textured PU leather strap with comfort cushioning on the inside. Decorated with rhinestones, silver embellishments and a large 2" turquoise stone concho in the center, overlaid with a rhinestone encrusted pewter cross. Wedge style, heel height 1 ¾"., Comes with a shoe box.
Product feature: Synthetic, Imported, Synthetic sole, Spiritual collection, Pewter cross over turquoise stone, Shipping Information: View shipping rates and policies, ASIN: B00TQ7MGIW, Item model number: thong, Date first listed on Amazon: February 17, 2015, Average Customer Review: 4.4 out of 5 stars 46 customer reviews
Product price: $44.99
Product brand: Montana West
Target attributes: Specialty Style
Answer: attribute: specialty style
value: None
source: None