Given the question: Information:  - The University of St. Gallen (in German: "Universität St. Gallen") is a research university located in St. Gallen, Switzerland. Established in 1898, it is specialized in the fields of business administration, economics, law, and international affairs. The University of St. Gallen is also known as HSG, which is an abbreviation of its former German name "Handels-Hochschule St. Gallen".  - War Photographer is a documentary by Christian Frei about the photographer James Nachtwey . As well as telling the story of an iconic man in the field of war photography , the film addresses the broader scope of ideas common to all those involved in war journalism , as well as the issues that they cover . The documentary won a 2003 Peabody Award , and was nominated for an Academy Award in 2002 and an Emmy Award in 2004 . It also won or was nominated for more than 40 other awards internationally .  - Christian Frei (born 1959 in Schönenwerd, Solothurn) is a Swiss filmmaker and film producer. He is mostly known for his films "War Photographer" (2001), "The Giant Buddhas" (2005) and "Space Tourists" (2009). Since 2006, Christian Frei has been an associate lecturer on Reflection Competence at the renowned University of St. Gallen. From 2006 to 2009 he was president of the Documentary Film Commission for the film section of the Swiss Ministry of Culture. Since August 2010 he is president of the Swiss Film Academy.  - James Nachtwey (born March 14, 1948) is an American photojournalist and war photographer.  - War photography involves photographing armed conflict and its effects on people and places.  - The Giant Buddhas is a documentary film by Swiss filmmaker Christian Frei about the destruction of the Buddhas of Bamyan in Afghanistan. It was released in March 2006. The movie film quotes local Afghans that the destruction was ordered by Osama Bin Laden and that initially, Mullah Omar and the Afghans in Bamyan had opposed the destruction.    Given the paragraphs above, decide what entity has the relation 'genre' with 'documentary film'.
The answer is:
war photographer