Table:
text: Troy Ruttman
Complete Formula One World Championship results
Complete Formula One World Championship results
Year_ Entrant Chassis Engine Points
1950 Bowes Racing Inc. Lesovsky Offenhauser Straight-4 0
1951 Christopher J.C. Agajanian Kurtis Kraft 2000 Offenhauser Straight-4 0
1952 Christopher J.C. Agajanian Kuzma Offenhauser Straight-4 8
1954 Eugene A Casaroll Kurtis Kraft 500A Offenhauser Straight-4 1.5
1956 John Zink Kurtis Kraft 500C Offenhauser Straight-4 0
1957 John Zink Watson Offenhauser Straight-4 0
1958 Scuderia Centro Sud Maserati 250F Maserati Straight-6 0
1960 John Zink Watson Offenhauser Straight-4 0

Question: What's the year with a Kurtis Kraft 500a chassis and less than 1.5 points in Troy Ruttman's Formula 1 World Championship overall results?

Question: What is the year with a Kurtis Kraft 500a chassis among Troy Ruttman's complete Formula 1 World Championship results?