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: Vitamina USA Belted Slim Fit Dress Pants #2577
Product feature: 100% Polyester, Imported, Hand wash or dry clean, Belted / Front & back pockets / Slim fit, Size small measurements: Waist28" Full length36" Inseam29", Model is wearing a size "Small", Color Disclaimer: Due to variances among color monitors, the colors on your computer monitor may appear slightly different than the actual color, ASIN: B0159AFBPO, Item model number: 2577 GreyS, Date first listed on Amazon: September 11, 2015, Average Customer Review: 4.0 out of 5 stars 1 customer review
Product brand: Vitamina USA
Target attributes: Pattern
Answer: attribute: pattern
value: None
source: None