<prompt> Translate the following text to EnglishPia, hakuna sababu ya Giovanni Pisano wa eneo hilo kuonyesha kiasi cha uwongo kuhusu mimbari yake ya marumaru ya karne ya 14 iliyochongwa kwa ustadi nusu ya kushoto, ambayo yaweza kusemwa kuwa kazi kuu ya kanisa kuu.  <response>: Inside, there was no reason either for local Giovanni Pisano to show false modesty about his superbly sculpted 14th-century marble pulpit left aisle, arguably the cathedrals masterpiece. 