Complex sentence: In Iberia, practicing Jews of modern returnee Sephardic origins, such as the Jewish community of Oporto, were re-established in the 20th century and early 21st centuries with a campaign of outreach to Oporto's crypto-Jews of Sephardic Bnei Anusim origins.
Split into simpler sentences: In Iberia, practicing Jews of modern returnee Sephardic origins were re-established in the 20th century and early 21st centuries. One such community's history, the Jewish community of Oporto, was initially founded by a campaign of outreach to Oporto's crypto-Jews of Sephardic Bnei Anusim origins.