In 1999, which star's gown, worn to serenade JFK in 1962, sold for about $1.3 million, then a record for a dress?

The words "at," "by" and "of" all belong to which part of speech? At a wedding in Cana, Jesus performed his first miracle by doing what? At Christmas 1965, which British band reached No. 1 in the U.S. with "Over and Over," its only American chart-topper? At the Council of Clermont in 1095, Pope Urban II proclaimed the first of which holy wars? Which world-famous medical center, founded by a doctor and his two sons, is based in Rochester, Minnesota? Originally called Byzantium and later Constantinople, which city officially took its current name in 1930? Which famed astronomer served as Britain's Astronomer Royal from 1720 until his death in 1742? In "Hamlet," which character says "Good night, sweet prince" at Hamlet's death?