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_27537 ( "Round" text, "Circuit" text, "Date" text, "Pole Position" text, "Fastest Lap" text, "Winning driver" text, "Winning team" text )

### Question ###
Name the fastest lap for piquet sports and silverstone

### Accurate SQL ###

SELECT "Fastest Lap" FROM table_27537 WHERE "Winning team" = 'Piquet Sports' AND "Circuit" = 'Silverstone'