Please answer the following question: Information: - The Madonna di Senigallia is a painting by the Italian Renaissance master Piero della Francesca , finished around 1474 . It is housed in the Galleria Nazionale delle Marche , in the Ducal Palace of Urbino . From its small scale the painting was intended for private devotion . It was noticed for the first time in 1822 in the church of the Observant Franciscan convent of Santa Maria delle Grazie just outside Senigallia ( Marche ) , whence the current name . Senigallia was wrested from Sigismondo Malatesta by Federico Montefeltro : both men were patrons of Piero . The commission was likely from or on behalf of Giovanni Della Rovere , betrothed in 1474 to Giovanna Montefeltro , at which time Federico made Giovanni , lord of Senigallia . Following its rediscovery the painting was taken to the Ducal Palace , Urbino . The 1990s restoration showed the high quality of Piero della Francesca 's treatment of light , as well as the influence of Flemish masters on it , both in its oil on panel medium and in details such as the basket with linen gauze , the coral , and the fabric covering the Madonna 's head . The light , which realistically enters from the window on the left , is a symbol of the Virgin 's conception . The linen in the basket is instead an allusion to her purity , while the case for hosts in the shelf and the necklace and pendant of coral worn by the infant Jesus both hint to the Eucharist sacrifice . The staring , thoughtful immobility of all the characters would be also an allusion to the latter . - Urbino is a walled city in the Marche region of Italy, south-west of Pesaro, a World Heritage Site notable for a remarkable historical legacy of independent Renaissance culture, especially under the patronage of Federico da Montefeltro, duke of Urbino from 1444 to 1482. The town, nestled on a high sloping hillside, retains much of its picturesque medieval aspect, an illusion only slightly broken by the large car parks below the town. It hosts the University of Urbino, founded in 1506, and is the seat of the Archbishop of Urbino. Its best-known architectural piece is the Palazzo Ducale, rebuilt by Luciano Laurana. - Federico da Montefeltro, also known as Federico III da Montefeltro KG (7 June 1422 10 September 1482), was one of the most successful condottieri of the Italian Renaissance, and lord of Urbino from 1444 (as Duke from 1474) until his death. A renowned intellectual Humanist and civil leader in Urbino on top of his impeccable reputation for martial skill and honor, he commissioned the construction of a great library, perhaps the largest of Italy after the Vatican, with his own team of scribes in his scriptorium, and assembled around him a large humanistic court in the Ducal Palace of Urbino, designed by Luciano Laurana and Francesco di Giorgio Martini. What is the relationship between 'madonna di senigallia' and 'palazzo ducale'?
A:
collection