Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Premier Yarn 3-Pack Ever Soft Multi Yarn, Neon Lights
Product description: PREMIER YARNS-Ever Soft Multi Yarn. This yarn comes in a rainbow of colors so you will find several that will be perfect for your projects. This is a basic worsted yarn with a touch of sheen and an unbelievable softness. Weight category: 4; 100% acrylic; 2.47oz/70g; 130yd/119m. Gauge: 18st x 24r =4in/10cm on size US 8 knitting needles. Suggested crochet hook size US H8. Care: machine wash; do not bleach; tumble dry low; do not iron. Imported.
Product feature: Package of three, A basic worsted yarn with a touch of sheen, 100% acrylic
Product brand: Premier Yarn
Target attributes: Thickness
Answer: attribute: thickness
value: weight category: 4
source: product description
attribute: thickness
value: worsted yarn
source: product description
attribute: thickness
value: worsted yarn
source: product feature