question: What consists of 25 pigmented squares touching a plate below a phosphorescent tablet under the light of a burning Magnesium ribbon ?
answer: The Warnerke Standard Sensitometer
turker_answer: The Warnerke Standard Sensitometer consists of 25 pigmented squares touching a plate below a phosphorescent tablet under the light of a burning Magnesium ribbon .
rule-based: The Warnerke Standard Sensitometer consists of 25 pigmented squares touching a plate below a phosphorescent tablet under the light of a burning Magnesium ribbon .