Table:
text: Zakspeed
Complete World Championship Formula One results
Complete World Championship Formula One results
Year_ Chassis Engines Tyres Points
1985 Zakspeed 841 Zakspeed S4 t/c G 0
1986 Zakspeed 861 Zakspeed S4 t/c G 0
1987 Zakspeed 861 Zakspeed 871 Zakspeed S4 t/c G 2
1988 Zakspeed 881 Zakspeed S4 t/c G 0
1989 Zakspeed 891 Yamaha V8 P 0

Question: What are the low points on a chassis of zakspeed 841 and a year before 1985 among all Zakspeed?

Question: What is the lowest year with tires in g and less than 0 points for Zakspeed?

Question: What year has a Yamaha v8 engine under Zakspeed?

Question: What are the average points with a Zakspeed 881 chassis below Zakspeed?