Question:
Choose your answer: Is "On 3 September 2000, John XXIII was declared "Blessed" alongside Pope Pius IX by Pope John Paul II, the penultimate step on the road to sainthood after a miracle of curing an ill woman was discovered." a good answer to the question "Who declared him "blessed?""
Answer:
yes

Question:
Choose your answer: Is "During the Neolithic Era, before the onset of desertification, around 9500 BCE the central Sudan had been a rich environment supporting a large population ranging across what is now barren desert, like the Wadi el-Qa'ab." a good answer to the question "During what era was the central Sudan rich in environment?"
Answer:
yes

Question:
Choose your answer: Is "A solar chimney (or thermal chimney, in this context) is a passive solar ventilation system composed of a vertical shaft connecting the interior and exterior of a building." a good answer to the question "What kind of system is a solar chimney?"
Answer:
yes