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. São João River (Iguazu River) -  The São João River (Iguazu River) is a river of Paraná state in southern Brazil.
Natural Place

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. Amalia Bakas -  Amalia Bakas (born Mazaltov [Mally] Matsa 1897-1979) was a Greek singer and performer in the United States during the 20th century. She was heavily involved in the eighth Avenue scene in New York City and in Greek communities around the United States. Her repertoire consisted of mostly traditional songs to which she added her own style and words. Unlike other singers of the time her songs were mostly about love.
Artist

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. Under the Same Stars -  Under the Same Stars is an album by the American indie band The Prom. It was released on July 9 2002 on the Barsuk label.
Album

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. University of Maryland Medical Center -  The University of Maryland Medical Center (UMMC) is a teaching hospital with 757 beds based in Baltimore Maryland that provides the full range of health care to people throughout Maryland and the Mid-Atlantic region. It gets more than 35000 inpatient admissions and 165000 outpatient visits each year. UMMC has approximately 6500 employees as well as 1000 attending physicians and provides training for about half of Maryland's physicians and other health care professionals.
Building