question: Where does Bernhard Bielenstein's father work at?
context: [["Hernando de Cabez\u00f3n", ["Hernando de Cabez\u00f3n, (baptized 7 September 1541 \u2013 1 October 1602) was a Spanish composer and organist, son of Antonio de Cabez\u00f3n.", "Only a few of his works are extant today, and he is chiefly remembered for publishing the bulk of his father's work."]], ["Emanuel Glicen Romano", ["Emanuel Glicen Romano or Emanuel Glicenstein( 1897 \u2013 1984) was a painter born in Italy.", "He emigrated to America and spent some time in Safed in Israel.", "where he organised a museum for his father's work."]], ["Bernhard Bielenstein", ["Bernhard Max August Bielenstein (\u2013 14 April 1959) was a Baltic German architect.", "Bernhard Bielenstein was born in Doblen in a family of pastor, linguist and ethnographer August Johann Gottfried Bielenstein.", "He studied at the Riga Polytechnic Institute (present-day Riga Technical University).", "He graduated in 1904, and thereafter continued his studies in Berlin.", "In 1905 he set up his own architectural firm in Riga.", "In addition, he worked at the Riga Mortgage Association.", "During World War I, he worked at different military offices in Pskov and Vitebsk.", "From 1918, he again worked as an architect in Riga.", "In 1939, he moved to Germany.", "He died in Heilbronn.", "In Riga he designed more than 30 residential buildings, mostly in a rationalistic form of Art Nouveau, though some of his buildings also bear influences from Latvian National Romantic style."]], ["Christopher Shinn", ["Christopher Shinn is an American playwright.", "His play\" Dying City\"( 2006) was a finalist for the 2008 Pulitzer Prize for Drama, and\" Where Do We Live\"( 2004) won the 2005 Obie Award, Playwriting."]], ["Dave Grossman (game developer)", ["Dave Grossman is an American game programmer and game designer, most known for his work at Telltale Games and early work at LucasArts.", "He has also written several children's books, and a book of\" guy poetry\" called\" Ode to the Stuff in the Sink\"."]], ["Frank Wildhorn", ["Frank Wildhorn( born November 29, 1958) is an American composer known for both his musicals and popular songs.", "He is most known for his musical\" Jekyll& Hyde\", which ran four years on Broadway, and for writing the# 1 International hit song\" Where Do Broken Hearts Go\" for Whitney Houston."]], ["David Shute", ["David Shute is a British journalist, best known for his work at the BBC."]], ["Andrey Vilkitsky", ["Andrey Ippolitovich Vilkitsky  was a Russian hydrographer and surveyor.", "He was born in the Minsk Governorate.", "His son, Boris Vilkitsky followed up his father's work; the Vilkitsky Islands are named after him."]], ["Fiona McIntosh", ["Fiona McIntosh( born 1960) is an author of adult and children's books who lives in Australia.", "She was born in Brighton, England and between the ages of three and eight, travelled a lot to Africa due to her father's work.", "At the age of nineteen, she travelled first to Paris and later to Australia, where she has lived ever since.", "In 2007, she released a crime novel,\" Bye Bye Baby\", under the pseudonym of Lauren Crow, however the pen name has since been dropped for the republished edition of\" Bye Bye Baby\" and for the sequel,\" Beautiful Death\"."]], ["August Johann Gottfried Bielenstein", ["August Johann Gottfried Bielenstein  was a Baltic German linguist, folklorist, ethnographer, and theologian.", "Bielenstein was born in Mitau (Jelgava), where he also died.", "He studied at the University of Halle (in Prussian Saxony) like numerous prominent pastors in the Baltic region, and received a doctorate in theology from the University of Dorpat in 1850.", "He was granted an honorary doctorate from the University of K\u00f6nigsberg in 1883.", "The editor of the major Latvian language newspaper \"Latvie\u0161u Av\u012bzes\" and a member of the St. Petersburg Academy of Sciences", ", Bielenstein was the author of numerous major works on linguistics and ethnography, including \"Die lettische Sprache,", "nach ihren Lauten und", "FormenThe Latvian Language, Its Phonetics and Forms\", 2 volumes, 1863\u201364) and \"Die Grenzen des lettischen Volksstammes und der lettischen Sprache in der Gegenwart", "und i", "m 13.", "JahrhundertThe Borders of the Latvian Tribes and the Latvian Language in the Present and in the 13th Century\", 1892).", "He encouraged the collection of dainas, studied traditional wooden architecture, and examined castle mounds to identify them according to their description in ancient chronicles.", "Whilst Bielenstein made many seminal contributions to the study of the Latvian language and culture, he was also a fierce opponent of the Young Latvians and a staunch defender of the Baltic German tradition."]]]
supporting_facts: [["Bernhard Bielenstein", 1], ["August Johann Gottfried Bielenstein", 4]]
evidences: [["Bernhard Bielenstein", "father", "August Johann Gottfried Bielenstein"], ["August Johann Gottfried Bielenstein", "employer", "St. Petersburg Academy of Sciences"]]
answer: St. Petersburg Academy of Sciences