 
 <prompt> A mosaic na example of wetin? Given di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: For di next century Ravenna, wey be di capital of di Western Roman Empire, e become di center of late Roman mosaic art (see details for Ravenna section). Milan sef serve as di capital of di western empire for di 4th century. For di St Aquilinus Chapel of di Basilica of San Lorenzo, mosaics wey dem do for di late 4th and early 5th centuries show Christ with di Apostles and di Abduction of Elijah; dis mosaics dey outstanding sake of their bright colors, naturalism and how dem follow di classical canons of order and proportion. Di surviving apse mosaic of di Basilica of Sant'Ambrogio, wey show Christ wey dey sit down between Saint Gervasius and Saint Protasius and angels before golden background, dem date back to di 5th and 8th century, even though dem restore am many times later. Di baptistery of di basilica, wey dem demolish for di 15th century, get vault wey dem cover with gold-leaf tesserae, and dem see plenty of am when dem excavate di site. For di small shrine of San Vittore in ciel d'oro, wey be chapel of Sant'Ambrogio now, every surface dey cover with mosaics from di second half of di 5th century. Saint Victor dey for di center of di golden dome, while figures of saints dey show for di walls before blue background. Di low spandrels make space for di symbols of di four Evangelists. 