 Complete the following phrase:  In 18941895, together with Karel Vítězslav Mašek and Vojtěch Bartoněk he worked on a monumental painting designed by Mikoláš Aleš. It was called Pobití Sasíků pod Hrubou Skálou The Slaughter of the Saxons at Hrubá Skála, commemorating a 13th-century Czech victory and measured 8.5 by 10 meters 28 by 33 feet. He was also one of several artists who collaborated on creating a panorama of the 