Question: Since the middle of the 19th century, Masonic historians have sought the origins of the movement in a series of similar documents known as the Old Charges, dating from the Regius Poem in about 1425 to the beginning of the 18th century. Alluding to the membership of a lodge of operative masons, they relate a mythologised history of the craft, the duties of its grades, and the manner in which oaths of fidelity are to be taken on joining. The fifteenth century also sees the first evidence of ceremonial regalia.
Is there an answer to this question: What are the new Masonic documents referred as?

Answer: unanswerable


Question: Many organisms (of which humans are prime examples) eat from multiple levels of the food chain and, thus, make this classification problematic. A carnivore may eat both secondary and tertiary consumers, and its prey may itself be difficult to classify for similar reasons. Organisms showing both carnivory and herbivory are known as omnivores. Even herbivores such as the giant panda may supplement their diet with meat. Scavenging of carrion provides a significant part of the diet of some of the most fearsome predators. Carnivorous plants would be very difficult to fit into this classification, producing their own food but also digesting anything that they may trap. Organisms that eat detritivores or parasites would also be difficult to classify by such a scheme.
Is there an answer to this question: What can make classification of predators problematic when using a food pyramid?

Answer: Many organisms (of which humans are prime examples) eat from multiple levels of the food chain


Question: Apple released the Macintosh Plus on January 10, 1986, for a price of US$2,600. It offered one megabyte of RAM, easily expandable to four megabytes by the use of socketed RAM boards. It also featured a SCSI parallel interface, allowing up to seven peripherals—such as hard drives and scanners—to be attached to the machine. Its floppy drive was increased to an 800 kB capacity. The Mac Plus was an immediate success and remained in production, unchanged, until October 15, 1990; on sale for just over four years and ten months, it was the longest-lived Macintosh in Apple's history. In September 1986, Apple introduced the Macintosh Programmer's Workshop, or MPW, an application that allowed software developers to create software for Macintosh on Macintosh, rather than cross compiling from a Lisa. In August 1987, Apple unveiled HyperCard and MultiFinder, which added cooperative multitasking to the Macintosh. Apple began bundling both with every Macintosh.
Is there an answer to this question: In 1986, what did Apple introduce to allow developers to create software for Macintosh on Macintosh?

Answer: Macintosh Programmer's Workshop


Question: During the siege of Jerusalem by the First Crusade in 1099, the Jewish inhabitants of the city fought side by side with the Fatimid garrison and the Muslim population who tried in vain to defend the city against the Crusaders. When the city fell, about 60,000 people were massacred, including 6,000 Jews seeking refuge in a synagogue. At this time, a full thousand years after the fall of the Jewish state, there were Jewish communities all over the country. Fifty of them are known and include Jerusalem, Tiberias, Ramleh, Ashkelon, Caesarea, and Gaza. According to Albert of Aachen, the Jewish residents of Haifa were the main fighting force of the city, and "mixed with Saracen [Fatimid] troops", they fought bravely for close to a month until forced into retreat by the Crusader fleet and land army. However, Joshua Prawer expressed doubt over the story, noting that Albert did not attend the Crusades and that such a prominent role for the Jews is not mentioned by any other source.[undue weight? – discuss]
Is there an answer to this question: Who did the Jewish inhabitants fight side by side with?

Answer:
Fatimid garrison