What is Piet de Jong?
{{Infobox officeholder |honorific-prefix = [[Excellency|His Excellency]] |name = Piet de Jong |image = Piet de Jong 1970.jpg |imagesize = 250px |office = [[Parliamentary group leader|Parliamentary leader]] of the [[Catholic People's Party]] in the [[Senate (Netherlands)|Senate]] |term_start = May 11, 1971 |term_end = September 17, 1974 |predecessor = [[Jan Niers]] |successor = [[Jan Teijssen]] |office1 = [[Senate (Netherlands)|Member of the Senate]] |term_start1 = May 11, 1971 |term_end1 = September 17, 1974 |office2 = [[Prime Minister of the Netherlands]] |term_start2 = April 5, 1967 |term_end2 = July 6, 1971 |monarch2 = [[Juliana of the Netherlands|Juliana]] |deputy2 = [[Johan Witteveen]] <br/> [[Joop Bakker]] |predecessor2 = [[Jelle Zijlstra]] |successor2 = [[Barend Biesheuvel]] |office3 = [[Ministry of Economic Affairs (Netherlands)|Minister of Economic Affairs]] |term_start3 = January 7, 1970 |term_end3 = January 14, 1970 |primeminister3 = Piet de Jong |predecessor3 = [[Leo de Block]] |successor3 = [[Roelof Nelissen]] |office4 = [[House of Representatives (Netherlands)|Member of the House of Representatives]] |term_start4 = February 23, 1967 |term_end4 = April 5, 1967 |office5 = [[Ministry of Defence (Netherlands)|Minister of Defence]] |term_start5 = July 24, 1963 |term_end5 = April 5, 1967 |primeminister5 = [[Vic Marijnen]] <small>(1963-1965)</small> <br/> [[Jo Cals]] <small>(1965-1966)</small> <br/> [[Jelle Zijlstra]] <small>(1966-1967)</small> |predecessor5 = [[Sim Visser]] |successor5 = [[Willem den Toom]] |office6 = [[State Secretary (Netherlands)|State Secretary]] for [[Ministry of Defence (Netherlands)|Defence]] |term_start6 = June 25, 1959 |term_end6 = July 24, 1963 |alongside6 = [