In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Context: Held against the backdrop of the 2008 Serbian presidential elections contested between incumbent Boris Tadic from the ruling center-left Democratic Party (DS) and challenger Tomislav Nikolic from the opposition right-wing Serbian Radical Party (SRS) Link Information: none Question: Which of the two political parties in the 2008 Serbian presidential elections has won the most presidential elections?
Answer: none