Complex sentence: He studied art with Christian Ruben at the Academy of Fine Arts, Prague from 1841 to 1851, where he began painting large canvases of scenes from Czech history, especially the era of the Hussite wars.
Split into simpler sentences: He studied art with Christian Ruben at the Academy of Fine Arts, Prague. In the 1840s, he began painting large canvases of scenes from Czech history, especially the era of the Hussite wars.