 
 <prompt> ```which artist be di second wey dem mention? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context:``` <response>: The term Cubism no dey common until 1911, mainly with reference to Metzinger, Gleizes, Delaunay, and Léger. In 1911, the poet and critic Guillaume Apollinaire accept the term on top of a group of artists wey dem invite to exhibit for Brussels Indépendants. The following year, in preparation for the Salon de la Section d'Or, Metzinger and Gleizes write and publish Du "Cubisme" to clear the confusion wey dey around the word, and as a major defence of Cubism (wey cause public scandal after the 1911 Salon des Indépendants and the 1912 Salon d'Automne for Paris). Clarifying their aims as artists, this work na the first theoretical treatise on Cubism and e still remain the clearest and most intelligible. The result, not solely a collaboration between its two authors, reflect discussions by the circle of artists wey dey meet for Puteaux and Courbevoie. E mirror the attitudes of the "artists of Passy", wey include Picabia and the Duchamp brothers, wey sections of am dey read before dem publish am. The concept wey develop for Du "Cubisme" of observing a subject from different points in space and time simultaneously, i.e., the act of moving around an object to seize am from several successive angles fused into a single image (multiple viewpoints, mobile perspective, simultaneity or multiplicity), na generally recognized device wey the Cubists dey use. 