Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_77578 ( "Entrant" text, "Constructor" text, "Chassis" text, "Engine \u2020" text, "Tyre" text, "Driver" text, "Rounds" text )

### Question ###
what is the engine when the rounds ar all, the tyre is m and the driver is david coulthard?

### Accurate SQL ###

SELECT "Engine \u2020" FROM table_77578 WHERE "Rounds" = 'all' AND "Tyre" = 'm' AND "Driver" = 'david coulthard'