context: The history of the Mona Lisa is shrouded in mystery; no exact information is available about the painting, or little information is available. Among the facts enveloped in obscurity, the time Leonardo took to paint the painting, the remuneration paid to him for this work, the period in which he kept the painting, and how it got to France. In addition, there is the identity of the character that is the subject of this painting, as there is still no conclusive evidence from which to know the identity of this character exactly, [10] and on the other hand contains the biography of Leonardo da Vinci written by Giorgio Vasari in 1550 (i.e. after 31 A year after Da Vinci's death) had a lot of information about the Mona Lisa, which is now the most important source for information about the identity of the character sitting in the painting. According to this biography, the seated figure is Lisa Gerardini, wife of the wealthy merchant Francesco del Giocondo, who said in his biography the life of the best photographers, sculptors and architects 1550: [25] After the discovery of the painting many questions arose about the identity of the seated character. Although historians have agreed that the seated figure is Lisa Gerardini, there is a group of people who have agreed that this painting is in fact a self-portrait, and that the features of the face are very similar to another self-portrait from Leonardo's work. [26]
question: How many years did it take (Leonardo da Vinci) to draw the Mona Lisa?
answers.text: no exact information is available about the painting,