Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: 5FT/10FT/20FT/30FT/40FT Long Dog Puppy Pet Puppy Training Obedience Lead Leash recall 3 Color Choice
Product description: Description: Provide safety for your dogs and pets while it's out Quality durable stainless steel hook Help you take your dog easily Easy to wear and remove Leash is made of durable nylon with heavy-duty and equipped with metal hook. 3 colors,satisfied you various needs Specification: Material: Nylon Length: 1.5m/, 3m, 4.5m, 6m, 7.5m, 9m, 12m, 15m(5FT, 10FT, 15FT, 20FT, 25FT, 30FT, 40FT) Width: 2.5cm Color: As picture showed,and for your choice Package Included: 1x Pet Rope (Please choose the size what you really want before purchased)
Product feature: Please choose the size what you really want before purchased, Leash is made of durable nylon with heavy-duty and equipped with metal hook., Easy to wear and remove,Help you take your dog easily, Quality durable stainless steel hook, Width: 2.0cm
Product price: $7.30
Product brand: MECO
Target attributes: Length
Answer: attribute: length
value: None
source: None