Does "In the medieval Middle Eastern world, the physicist and Islamic scholar, Al-Farabi (Alpharabius, 872950), conducted a small experiment concerning the existence of vacuum, in which he investigated handheld plungers in water.[unreliable source?]" contain the correct answer to "What type of pump appeared in the 15th century?"
OPTIONS:
- yes
- no

A: no

Does "In the dry north-east corner of the country lies Lake Chad, which Nigeria shares with Niger, Chad and Cameroon." contain the correct answer to "Which desert is encroaching into northeastern Nigeria?"
OPTIONS:
- yes
- no

A: no

Does "Historians trace the earliest church labeled "Baptist" back to 1609 in Amsterdam, with English Separatist John Smyth as its pastor." contain the correct answer to "When was the earliest church labeled "Baptist" traced to?"
OPTIONS:
- yes
- no

A:
yes