Table: roberto_moreno_1982
Columns: year
entrant
chassis
engine
points

Question: How many years did John Player Lotus used Cosworth v8?
SQL: SELECT SUM("year") FROM roberto_moreno_1982 WHERE "engine" = 'cosworth v8' AND "entrant" = 'john player lotus'

Question: Who used Eurobrun er189b after 1989?
SQL: SELECT "entrant" FROM roberto_moreno_1982 WHERE "year" > 1989 AND "chassis" = 'eurobrun er189b'

Question: Who used Ford v8 and Jordan 191 after 1990 and got 8 points?
SQL: SELECT "entrant" FROM roberto_moreno_1982 WHERE "year" > 1990 AND "engine" = 'ford v8' AND "points" = 8 AND "chassis" = 'jordan 191'