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: VonFon Womens Casual three quaters Long Sleeve Shirt Blouse Tops
Product description: Features: 1.button down shirt 2.three quaters sleeve 3.Material:100% Cotton Size: S:Shoulder36cm/14.2";Bust88cm/34.6";Sleeve44cm/17.3" M:Shoulder37cm/14.6";Bust92cm/36.2";Sleeve45cm/17.7" L:Shoulder38cm/15";Bust96cm/37.8";Sleeve46cm/18.1" XL:Shoulder39cm/15.4";Bust100cm/39.4";Sleeve47cm/18.5" Kind Reminder:Size could be 1-3cm inaccuracy due to manual measurements,please check your size before order,thank you for your understanding! Item Includes:1*shirt
Product feature: Material:100% Cotton, S:Shoulder36cm/14.2";Bust88cm/34.6";Sleeve44cm/17.3", M:Shoulder37cm/14.6";Bust92cm/36.2";Sleeve45cm/17.7", L:Shoulder38cm/15";Bust96cm/37.8";Sleeve46cm/18.1", XL:Shoulder39cm/15.4";Bust100cm/39.4";Sleeve47cm/18.5", ASIN: B00KVFCU5M, Date first listed on Amazon: June 9, 2014, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product brand: Vonfon
Target attributes: Sleeve Style
Answer: attribute: sleeve style
value: long sleeve
source: product title