Complex sentence: In July 1943 they were transferred to camps in Vittel and Bergen-Belsen; 15 of July 1943,300 Jews remaining in the Hotel without foreign passports were executed by Germans in Pawiak prison.
Split into simpler sentences: In July 1943 they were transferred to the Vittel and Bergen-Belsen camps. On 15 July 1943, the 300 Jews remaining in the Hotel without foreign passports were executed by the Germans at Pawiak prison.