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: IZOD Big and Tall Men's Crewneck Solid Jersey T Shirt
Product description: IZOD men's chest pocket short sleeve crew neck T Shirt
Product feature: 100% Cotton, Cotton, Machine washable, Crew neck, short sleeve, Chest pocket, Product Dimensions: 7 x 5 x 1 inches, Shipping Weight: 1.35 pounds, ASIN: B00SID8XTG, Item model number: 45X7018, Date first listed on Amazon: January 21, 2015, Average Customer Review: 3.0 out of 5 stars 1 customer review
Target attributes: Neckline
Answer: attribute: neckline
value: crew neck
source: product description
attribute: neckline
value: crew neck
source: product feature
attribute: neckline
value: crewneck
source: product title