The RMS Duke of Argyll was a steamer passenger ship operated by the London Midland and Scottish Railway from 1928 to 1956. 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?
Mean Of Transportation

The Norman Aviation Nordic VII is a Canadian advanced ultralight aircraft that was designed by Jacques Norman and produced by Norman Aviation of Saint-Anselme Quebec. The aircraft was supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft.Production is complete and the Nordic VII is no longer available. 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?
Mean Of Transportation

Grinnell Mechanical Products a brand of Tyco International Ltd. manufactures grooved piping and mechanical products. Grinnell Mechanical Products specializes in mechanical fire HVAC commercial mining institutional and industrial applications. Grinnell grooved products are used in various industries because they are historically more efficient than flanged welded and threaded pipe joining methods. 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

The International Journal of Number Theory was established in 2005 and is published by World Scientific. It covers number theory encompassing areas such as analytic number theory diophantine equations and modular forms. 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