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

Input:
Product title: 3 Pack | Ernie Ball Guitar Strings | Acoustic | Earthwood | Rock and Blues 10-52
Product description: 3 pack. Made from 80% copper, 20% zinc wire wrapped around hex shaped tin plated steel core wire. Great crisp tones. Rock Blues set, 10-52
Product feature: 3 Pack!, Made from 80% copper, 20% zinc wire wrapped around hex shaped tin plated steel core wire. Great crisp tones., All Ernie Ball strings are precision manufactured to the highest standards and most exacting specs to assure consistency, optimum performance, and long life., Made in California, USA!, String Gauges 10-13-17-30-42-52
Product brand: Ernie Ball
Target attributes: Gauge
Answer: attribute: gauge
value: None
source: None