<prompt> Translate the following text to EnglishMakusanyo yake ni hasa ya shule ya Venetian, hasa Familia Takatifu ya Mantegna, Madonna ya Giovanni Bellini, na Picha ya Mwanamume ya Lorenzo Lotto, inayosababishwa na baadhi ya Titian.  <response>: Its collections are principally of the Venetian school, notably Mantegnas Holy Family, a Giovanni Bellini Madonna, and Lorenzo Lottos Portrait of a Man, attributed by some to Titian. 