Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Echinopsis spachiana -  Echinopsis spachiana is a species of cactus native to South America. Commonly cultivated as a pot- or rockery plant around the world it has a lime green body with 1-2 cm long golden spines. It exhibits a columnar habit.
Plant

Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. SM U-78 -  SM U-78 was one of the 329 submarines serving in the Imperial German Navy in World War I.U-78 was engaged in the naval warfare and took part in the First Battle of the Atlantic as a minelayer. On 27 October 1918 low frequency communications from U-78 in the Skagerrak were detected by the British submarine G2 which sank her with the loss of her crew of 40. The commonly listed sinking date of October 28 1918 is in error.
Mean Of Transportation

Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Mare Liberum -  Mare Liberum (English: The Free Sea or The Freedom of the Seas) is a book in Latin on international law written by the Dutch jurist and philosopher Hugo Grotius first published in 1609. In The Free Sea Grotius formulated the new principle that the sea was international territory and all nations were free to use it for seafaring trade. The disputation was directed towards the Portuguese Mare clausum policy and their claim of monopoly on the East Indian Trade.
Written Work