CREATE TABLE table_16776 ("Race Name" CLOB, "Circuit" CLOB, "Date" CLOB, "Winning driver" CLOB, "Constructor" CLOB, "Report" CLOB)

What is the constructor for the Silverstone circuit?
SELECT "Constructor" FROM table_16776 WHERE "Circuit" = 'Silverstone'
SELECT "Constructor" FROM "table_16776" WHERE "Circuit" = 'Silverstone'