generate questions: Sassou also won the following presidential election in July 2009. According to the Congolese Observatory of Human Rights, a non-governmental organization, the election was marked by "very low" turnout and "fraud and irregularities".
Who won the presidential election in 2009? {sep_token} Which group provided oversight for the electoral process in 2009? {sep_token} What kind of turnout did the Congolese Observatory of Human Rights experience in the 2009 elections? {sep_token}