Complex sentence: Born Harold Rubin in New York City, Robbins later claimed to be a Jewish orphan who had been raised in a Catholic boys' home, whereas in reality he was the son of well-educated Russian-and Polish-Jewish immigrants.
Split into simpler sentences: Born Harold Rubin in New York City, Robbins later claimed to be a Jewish orphan who had been raised in a Catholic boys home. In reality he was the son of well-educated Russian-and Polish-Jewish immigrants.