Robotics;Notes (ロボティクス・ノーツ Robotikusu Nōtsu) is a Japanese visual novel developed and published by 5pb.. The game was released on the PlayStation 3 and Xbox 360 video game consoles on June 28 2012 with a PlayStation Vita port to be released on June 26 2014 under the title Robotics;Notes Elite. It is the third game in 5pb.'s Science Adventure series following Chaos;Head and Steins;Gate and is described as an Augmented Science Adventure (拡張科学アドベンチャー Kakuchō Kagaku Adobenchā). Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Written Work

Virtustream is a provider of cloud computing management software infrastructure as a service and managed services to enterprises governments and service providers.Virtustream was recognised as a visionary by Gartner in their 2012 infrastructure as a service magic quadrant report which highlighted their charging based on resources used rather than allocated and their application performance APIs. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Company

Mario Zagari (born 14 September 1913 – 29 February 1996) was an Italian socialist politician who served in the Italian parliament and in the European parliament as well as in the Italian governments in various capacities. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Office Holder