Complex sentence: In 2013 newspaper "NRC Handelsblad" conducted two opinion pollings, one by fifty experts and one from their readers for the best Prime Minister of the Netherlands since 1900.
Split into simpler sentences: In 2013 newspaper "NRC Handelsblad" conducted two opinion polls, one with fifty experts and one with their readers. The polls asked respondents to give their opinion on who was the best Prime Minister of the Netherlands since 1900.