user: Question: Name the circuit for #47 Orbit Racing 
Columns: ['Rnd', 'Circuit', 'LMP1 Winning Team', 'LMP2 Winning Team', 'GT2 Winning Team', 'Challenge Winning Team', 'Results']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Sebring', '#2 Audi Sport Team Joest', '#15 Fernández Racing', '#62 Risi Competizione', 'Did Not Participate', 'Results']
SQL:

assistant: SELECT "Circuit" FROM "Table" WHERE "Challenge Winning Team" = '#47 Orbit Racing';