Q: 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. Centaurea nigra -  Centaurea nigra is a species of flowering plant in the daisy family known by the common names Lesser Knapweed Common Knapweed and Black Knapweed. A local vernacular name is Hardheads.It is native to Europe but it is known on other continents as an introduced species and often a noxious weed.
A: Plant


Q: 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. Inga sellowiana -  Inga sellowiana is a species of legume in the Fabaceae family.It is found only in Brazil.
A: Plant


Q: 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. Stemonoporus lanceolatus -  Stemonoporus lanceolatus is a species of plant in the Dipterocarpaceae family. It is endemic to Sri Lanka.
A: Plant


Q: 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. Andrei Mihailov -  Andrei Mihailov (born October 31 1980 in Tiraspol) is a retired Moldovan swimmer who specialized in backstroke events. He is a two-time Olympian (2000 and 2004) and a member of the Moldova Swimming Team.Mihailov made his official debut at the 2000 Summer Olympics in Sydney where he competed in the men's 200 m backstroke.
A: Athlete