Problem: All of Chopin's compositions include the piano. Most are for solo piano, though he also wrote two piano concertos, a few chamber pieces, and some songs to Polish lyrics. His keyboard style is highly individual and often technically demanding; his own performances were noted for their nuance and sensitivity. Chopin invented the concept of instrumental ballade. His major piano works also include mazurkas, waltzes, nocturnes, polonaises, études, impromptus, scherzos, preludes and sonatas, some published only after his death. Influences on his compositional style include Polish folk music, the classical tradition of J. S. Bach, Mozart and Schubert, the music of all of whom he admired, as well as the Paris salons where he was a frequent guest. His innovations in style, musical form, and harmony, and his association of music with nationalism, were influential throughout and after the late Romantic period.
What features marked Frédéric's performance style and made them unique?
The answer is the following: nuance and sensitivity

Problem: The Teutonic Order lost eastern Prussia when Grand Master Albert of Brandenburg-Ansbach converted to Lutheranism and secularized the Prussian branch of the Teutonic Order in 1525. Albert established himself as the first duke of the Duchy of Prussia and a vassal of the Polish crown by the Prussian Homage. Walter von Cronberg, the next Grand Master, was enfeoffed with the title to Prussia after the Diet of Augsburg in 1530, but the Order never regained possession of the territory. In 1569 the Hohenzollern prince-electors of the Margraviate of Brandenburg became co-regents with Albert's son, the feeble-minded Albert Frederick.
What did Albert establish himself as?
The answer is the following: first duke of the Duchy of Prussia

Problem: Gephardt added that "inclusion and empowerment of the people on the line have to be done to get the best performance" from the minority party. Other techniques for fostering party harmony include the appointment of task forces composed of partisan colleagues with conflicting views to reach consensus on issues; the creation of new leadership positions as a way to reach out and involve a greater diversity of partisans in the leadership structure; and daily meetings in the Leader's office (or at breakfast, lunch, or dinner) to lay out floor strategy or political objectives for the minority party.
What is a good technique to foster party harmony?
The answer is the following: appointment of task forces

Problem: Western Catalan comprises the two dialects of Northwestern Catalan and Valencian; the Eastern block comprises four dialects: Central Catalan, Balearic, Rossellonese, and Alguerese. Each dialect can be further subdivided in several subdialects.
How many dialects are in the eastern group?
The answer is the following:
four