Task: Question Generation
Input (English): In styles that owe as much to videogame pixel art and popculture as to traditional mosaic, street art has seen a novel reinvention and expansion of mosaic artwork. The most prominent artist working with mosaics in street art is the French Invader. He has done almost all his work in two very distinct mosaic styles, the first of which are small "traditional" tile mosaics of 8 bit video game character, installed in cities across the globe, and the second of which are a style he refers to as "Rubikcubism", which uses a kind of dual layer mosaic via grids of scrambled Rubik's Cubes. Although he is the most prominent, other street and urban artists do work in Mosaic styles as well.
Output (English): What has recently seen an expansion of mosaic artwork?