 According to Uri Tadmor, there is no clear border distinguishing Colloquial Jakarta Indonesian from Betawi Malay.The origin of Betawi is of debate to linguists; many consider it to be a Malay dialect descended from Proto-Malayic, while others consider it to have developed as a creole.It is believed that descendants of Chinese men and Balinese women in Batavia converted to Islam and spoke a pidgin that was later creolized, and then decreolized incorporating many elements from Sundanese and Javanese (Uri Tadmor 2013).