Question: Who is the winner constructor with driver Riccardo Patrese?
SQL: SELECT "Winning Constructor" FROM "2-1137704-2" WHERE "Winning Driver" = 'Riccardo Patrese';

Question: What is the highest round on 5 April?
SQL: SELECT MAX("Round") FROM "2-1137704-2" WHERE "Date" = '5 April';

Question: Which date was Hermanos Rodríguez the location?
SQL: SELECT "Date" FROM "2-1137704-2" WHERE "Location" = 'Hermanos Rodríguez';