Which Irish writer, dying in Paris in 1900, reportedly quipped "My wallpaper and I are fighting a duel to the death"?

An international piano competition held every four years is named for which American who won a competition in Moscow in… Which word names an invisible emanation said to surround a person, or a distinctive intangible quality? Which word can mean an invoice, the visor of a cap and a bird's beak? An individual retirement account created in 1998 is named for which longtime Delaware senator? Which alloy of iron and carbon contains less than about 2% carbon? Which Pacific island, named for the sailor who first sighted it in 1767, was settled in 1790 by mutineers from HMS Boun… Reykjavík, the world's northernmost capital of a sovereign state, is in which island country? In statistics, what is a data point that lies far from the rest of the data called?