Complex sentence: The Arabs then intermarried with the Minangkabau; this gave rise to the Arab-Minangkabau admixture now described as Malay, as they have assimilated into the local Malay community., one of the oldest mosques in George Town, built in 1801.
Split into simpler sentences: The Arabs then intermarried with the Minangkabau; this gave rise to Arab-Minangkabau admixture who are now described as Malay, as they have assimilated into the local Malay community. Faridah Abdul Rashid, Research on the Early Malay Doctors 1900--1957 Malaya and Singapore, 2012, one of the oldest mosques in George Town, built in 1801.