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

Input:
Product title: Threadrock Little Boys' Birthday Boy 4 Year Old Toddler T-Shirt
Product description: Threadrock exclusive, available in selected sizes and colors. Our novelty toddler tees will look awesomely adorable on your little one! Tees are 100% preshrunk cotton and fully machine washable.
Product feature: Threadrock exclusive, 100% preshrunk cotton; ribbed crew neck; taped shoulder-to-shoulder; double-needle hemmed bottom and sleeves, Available sizes: 2T, 3T, 4T, Shipping Information: View shipping rates and policies, ASIN: B01FYLXR36, Item model number: TKB01106-06, Date first listed on Amazon: May 21, 2016, Average Customer Review: 5.0 out of 5 stars 1 customer review
Product price: $11.95
Target attributes: Age Group
Answer: attribute: age group
value: toddler
source: product description
attribute: age group
value: toddler
source: product title
attribute: age group
value: 3t
source: product feature
attribute: age group
value: 4t
source: product feature
attribute: age group
value: 4
source: product title
attribute: age group
value: 2t
source: product feature