user: Question: Who received gold when the event is Time trial details and silver is Simon Richardson Great Britain (GBR)?
Columns: ['Event', 'Class', 'Gold', 'Silver', 'Bronze']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Time trial details', 'Time trial B&VI 1–3', 'Spain (ESP) Christian Venge David Llaurado', 'Netherlands (NED) Alfred Stelleman Jaco Tettelaar', 'Poland (POL) Krzysztof Kosikowski Artur Korc']
SQL:

assistant: SELECT "Gold" FROM "Table" WHERE "Event" = 'Time trial details' AND "Silver" = 'Simon Richardson Great Britain (GBR)';