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: Total Foam Rolling Techniques: Trade Secrets of a Personal Trainer
Product description: It's not a huge book--just 144 pages total--but it provides an enormous wealth of helpful foam rolling information. Fit Bottomed Girls, " According to Barrett, after rolling, you should feel like youve given yourself a sports massageless tight and more relaxed." Coco Meyers, LivingHealthy.com, Steve Barrett is a well respected personal trainer, industry presenter and leading fitness brand consultant. He has worked in the fitness industry for over 20 years.
Product price: $19.13
Product brand: Visit Amazon's Steve Barrett Page
Target attributes: Page Count
Answer: attribute: page count
value: 144 pages
source: product description