Table: manx_race_results_8
Columns: rank
rider
team
speed
time

Question: Which rider was on the 600cc Yamaha team?
SQL: SELECT "rider" FROM manx_race_results_8 WHERE "team" = '600cc yamaha'

Question: What was John Hildreth's speed?
SQL: SELECT "speed" FROM manx_race_results_8 WHERE "rider" = 'john hildreth'