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

Input:
Product title: School Smart Gradeballs Rubber Basketballs - Mini - 11 Inch - Set of 6 Colors
Product description: School Smart miniature basketball set is used for gym or classroom activities, and has six balls in assorted colors--yellow, red, blue, green, orange, and violet--for ease of assigning and tracking ball ownership by class or grade. The balls are made of rubber for durability, and constructed to standard specifications for basketballs. Rubber is an elastic hydrocarbon polymer, and is highly elastic, resisting abrasion and impact forces. The balls measure 11.0 inches in circumference, and are suitable for elementary grade level., Science education products incorporate applied math and science principles into classroom and homeschool-based projects. Teachers in pre-K, elementary, and secondary classrooms use science education kits and products alongside science, technology, engineering, and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities. Science education projects include a broad range of activities, such as practical experiments in engineering, aeronautics, robotics, energy, chemistry, physics, biology, and geology., School Specialty provides instructional materials and supplies under dozens of brands, among them Abilitations, Think Math, Delta Education, Frey Scientific, Neo/SCI, Childcraft, School Smart, and Speech Bin. The company, founded in 1959, is headquartered in Greenville, WI.
Product brand: School Smart
Target attributes: Size
Answer: attribute: size
value: mini
source: product title