 Complete the following phrase:  Salvatge wrote the third piece in a five-piece cycle of sirventes written in Summer 1285. Early in the summer Bernart dAuriac inaugurated the political debate by coming to the defence of the three kings Philip III of France, Philip of Navarre, and Charles of Valois, who claimed the Crown of Aragon. Under the direction of the French king they invaded Catalonia in the so-called 