sentences:  Švehla, who was prime minister for much of this period, effectively incorporated the Pětka into his cabinet during his tenure, taking members from each of the five major parties to serve as experts or luminaries in his cabinet.The Pětka helped keep under control the economic crisis that sparked hyperinflation across Europe between 1922-23.In 1924, the Petka directed the National Assembly to pass a National Insurance Law.