<prompt> Translate the following text to SwahiliThe austerely sculpted porches flanking the main entrance are from the early period, and the more ornamental elongated central porch and the gabled upper windows were added in the 15th and 16th centuries.  <response>: Vituo vya kuchonga vilivyozunguka mlango mkuu ni vya enzi ya mapema, na viti vya katikati vilivyoinuliwa zaidi na madirisha ya juu ya gabled yaliongezwa katika karne ya 15 na 16. 