Complex sentence: He heads the main "Breslov yeshiva" in Meah Shearim, and is one of the "rosh yeshiva" s of the famous yeshiva of "Kabbalah", "Shaar HaShamayim".
Split into simpler sentences: He heads the main "Breslov yeshiva" in Meah Shearim. He is also one of the "rosh yeshiva" s of the famous yeshiva of "Kabbalah", "Shaar HaShamayim".