Paper, books or canvases of sorts are labeled in size with A1, A2, A3 etc (the bigger the number the smaller the object) a4 paper is the standard size
Impressionism originated with a group of Paris-based artists whose independent exhibitions brought them to prominence during the 1870s and 1880s.
Because Ogres have layers, and onions have layers.
I would have to say either valve trombone or baritone/euphonium.
