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: Kariban Proact Mens Short Sleeve Performance Polo Shirt
Product description: Moisture control fabric. Self fabric collar. Twin needle finishing. 3 pearlised button placket. Fabric: 50% Polyester Cool Plus, 50% Polyester. Sizes: S - 2XL (36, 38, 40, 42, 44/46).
Product feature: Polyester, ,, Moisture control fabric., Self fabric collar., Twin needle finishing., 3 pearlised button placket., Fabric: 50% Polyester Cool Plus, 50% Polyester., Shipping Information: View shipping rates and policies, ASIN: B00XOBQBLE, Date first listed on Amazon: December 22, 2018, Average Customer Review: 4.0 out of 5 stars 1 customer review
Product price: $15.45 - $18.35
Product brand: Kariban Proact
Target attributes: Neckline
Answer: attribute: neckline
value: polo shirt
source: product title