Complex sentence: Rabbi Hillman received Semicha from the famous Rabbis Eliyahu Dovid Teumim (who was the head of the Beth Din in Ponevezh and afterwards in Jerusalem), Refael Shapiro of Volozhin, Meir Simcha HaKohen of Dvinsk and the Ridvaz of Slutsk.
Split into simpler sentences: Rabbi Hillman received Semicha from Rabbi Eliyahu Dovid Teumim, who was the head of the Beth Din in Ponevezh and afterwards in Jerusalem. He then received Semicha from Rabbi Refael Shapiro of Volozhin, Rabbi Meir Simcha HaKohen of Dvinsk and the Ridvaz of Slutsk.