<prompt> Translate the following text to EnglishMnamo mwaka wa 1173, kanisa la Duomo lilijengwa, na baada ya ujenzi wake, lilijengwa kwa sehemu ndogo.  <response>: Begun after the Duomo in 1173, it began to lean when only three of its eight stories had been completed the Duomo is also marginally off-kilter. 