Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Pet Trex 2190 ABS 24 Inch Dog Crate Folding Pet Crate Kennel for Dogs, Cats or Rabbits, 24"
Product description: Pet Trex has done it again with their Crate-N-Kennel Series pet cages. These premium quality cages are constructed from heavy gauge wire and incorporate all the bells and whistles of cages costing 3X as much. Pet Trex warranties all dog crates with a one-year limited warranty. Some of the features of these quality cages include:, Pet Trex incorporates strict quality control and design standards to ensure the safety, security and comfort of your Dog. Set-up is simple, requires no tools, and only takes minutes. Some of the features of Crate-N-Kennel Series:, 2190 24 Inch Pet Crate, 2191 30 Inch Pet Crate, 2192 36 Inch Pet Crate, 2193 42 Inch Pet Crate
Product feature: Easily Sets Up & Folds Down to Portable Size, Durable, Satin Black Electro-Coat Finish, Tough ABS Pan: Deluxe, light weight and Easy to clean!, Fold and Carry Configuration, 1 Year Warranty!
Product price: $34.12
Product brand: Pet Trex
Target attributes: Size
Answer: attribute: size
value: None
source: None