Take the following as truth: The dominant feature of these ruins is the 45-m- (146-ft-) high, cylindrical Dhamekh Stupa, built in the fifth century a.d. , which is believed by many to mark the ancient site of Buddha's most famous sermon.
Then the following statement: "Many people think the Dhamekh Stupa is built on the site where Buddha delivered his most famous sermon." is true, false, or inconclusive?