Here is a question about this article: Since annelids are soft-bodied, their fossils are rare. Polychaetes' fossil record consists mainly of the jaws that some species had and the mineralized tubes that some secreted. Some Ediacaran fossils such as Dickinsonia in some ways resemble polychaetes, but the similarities are too vague for these fossils to be classified with confidence. The small shelly fossil Cloudina, from 549 to 542 million years ago, has been classified by some authors as an annelid, but by others as a cnidarian (i.e. in the phylum to which jellyfish and sea anemones belong). Until 2008 the earliest fossils widely accepted as annelids were the polychaetes Canadia and Burgessochaeta, both from Canada's Burgess Shale, formed about 505 million years ago in the early Cambrian. Myoscolex, found in Australia and a little older than the Burgess Shale, was possibly an annelid. However, it lacks some typical annelid features and has features which are not usually found in annelids and some of which are associated with other phyla. Then Simon Conway Morris and John Peel reported Phragmochaeta from Sirius Passet, about 518 million years old, and concluded that it was the oldest annelid known to date. There has been vigorous debate about whether the Burgess Shale fossil Wiwaxia was a mollusc or an annelid. Polychaetes diversified in the early Ordovician, about 488 to 474 million years ago. It is not until the early Ordovician that the first annelid jaws are found, thus the crown-group cannot have appeared before this date and probably appeared somewhat later. By the end of the Carboniferous, about 299 million years ago, fossils of most of the modern mobile polychaete groups had appeared. Many fossil tubes look like those made by modern sessile polychaetes  , but the first tubes clearly produced by polychaetes date from the Jurassic, less than 199 million years ago.
What is the answer to this question: What era was underway 505 million years ago?
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So... early Cambrian


Here is a question about this article: The first institute of madrasa education was at the estate of Hazrat Zaid bin Arkam near a hill called Safa, where Hazrat Muhammad was the teacher and the students were some of his followers.[citation needed] After Hijrah (migration) the madrasa of "Suffa" was established in Madina on the east side of the Al-Masjid an-Nabawi mosque. Hazrat 'Ubada bin Samit was appointed there by Hazrat Muhammad as teacher and among the students.[citation needed] In the curriculum of the madrasa, there were teachings of The Qur'an,The Hadith, fara'iz, tajweed, genealogy, treatises of first aid, etc. There were also trainings of horse-riding, art of war, handwriting and calligraphy, athletics and martial arts. The first part of madrasa based education is estimated from the first day of "nabuwwat" to the first portion of the "Umaiya" caliphate.[citation needed]
What is the answer to this question: What handwriting art form was taught in the early madaris?
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So... calligraphy


Here is a question about this article: The group's second LP, Queen II, was released in 1974, and features rock photographer Mick Rock's iconic image of the band on the cover. This image would be used as the basis for the 1975 "Bohemian Rhapsody" music video production. The album reached number five on the British album chart and became the first Queen album to chart in the UK. The Freddie Mercury-written lead single "Seven Seas of Rhye" reached number ten in the UK, giving the band their first hit. The album is the first real testament to the band's distinctive layered sound, and features long complex instrumental passages, fantasy-themed lyrics, and musical virtuosity. Aside from its only single, the album also included the song "The March of the Black Queen", a six-minute epic which lacks a chorus. The Daily Vault described the number as "menacing". Critical reaction was mixed; the Winnipeg Free Press, while praising the band's debut album, described Queen II as a "over-produced monstrosity". Allmusic has described the album as a favourite among the band's hardcore fans, and it is the first of three Queen albums to feature in the book 1001 Albums You Must Hear Before You Die.
What is the answer to this question: What was the name of Queen's second LP?
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So...
Queen II