user: Question: What is the most number of rounds that the Team from RBR Enterprises and having a Chevrolet Silverado ran?
Columns: ['Team', 'Truck(s)', 'Driver(s)', 'Primary Sponsor(s)', 'Owner(s)', 'Crew Chief', 'Rounds']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['Adrian Carriers Racing', 'Chevrolet Silverado', 'Steve Wallace', 'Liz Girl Logistics', 'Gary Adam', 'Nick Carlson', 4.0]
SQL:

assistant: SELECT MAX("Rounds") FROM "Table" WHERE "Truck(s)" = 'Chevrolet Silverado' AND "Team" = 'RBR Enterprises';