Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: Jessica Simpson Pull Over Side Slit Nursing Top
Product description: JESSICA SIMPSON NURSING TOP SHORT SLEEVE CREW NECK PULL OVER NURSING FUNCTION SIDE SLIT RAYON/ SPANDEX JERSEY KNIT MACHINE WASHABLE IMPORTED
Product feature: RAYON/ SPANDEX, JESSICA SIMPSON NURSING TOP, SIDE SLIT, SHORT SLEEVE, CREW NECK, Package Dimensions: 11.8 x 9.2 x 1.3 inches, Shipping Weight: 10.1 ounces, ASIN: B000T8CZBK, Date first listed on Amazon: January 2, 1970, Average Customer Review: 4.0 out of 5 stars 5 customer reviews
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: short sleeve
source: product feature
attribute: sleeve style
value: short sleeve
source: product description