Table:
text: Paco Godia
Complete Formula One World Championship results
Complete Formula One World Championship results
Year_ Entrant Chassis Engine Points
1951 Scuderia Milano Maserati 4CLT/48 Maserati Straight-4 0
1954 Officine Alfieri Maserati Maserati 250F Maserati Straight-6 0
1956 Officine Alfieri Maserati Maserati 250F Maserati Straight-6 6
1957 Francesco Godia Sales Maserati 250F Maserati Straight-6 0
1958 Francesco Godia Sales Maserati 250F Maserati Straight-6 0

Question: For Paco Godia, what is the average year of a competitor who had less than 6 points and a Maserati Straight 6 engine?

Question: Before 1957, which competitor under Paco Godia had a Maserati 250F chassis and scored less than 6 points?

Question: Which chassis was built in 1951 under Paco Godia?

Question: Next to Paco Godia, what is the Officine Alfieri Maserati chassis with a Maserati straight-6 engine and less than 6 points?