Table: roberto_guerrero_race_results
Columns: year
team
chassis
engine
rank

Question: What engine was used in 1999?
SQL: SELECT "engine" FROM roberto_guerrero_race_results WHERE "year" = '1999'

Question: What rank did the chassis reynard 94i have in 1996?
SQL: SELECT "rank" FROM roberto_guerrero_race_results WHERE "chassis" = 'reynard 94i' AND "year" = '1996'

Question: What rank did the dallara chassis finish in 2000?
SQL: SELECT "rank" FROM roberto_guerrero_race_results WHERE "year" = '2000' AND "chassis" = 'dallara'

Question: Which engine finished 7th with the reynard 95i chassis?
SQL: SELECT "engine" FROM roberto_guerrero_race_results WHERE "rank" = '7th' AND "chassis" = 'reynard 95i'