Question: Juan Carlos Sistos won the Silverston Grand Prix Circuit which straddles where?
Sentence (from "Silverstone Circuit"): The Northamptonshire towns of Towcester (5 miles) and Brackley (7 miles) and Buckinghamshire town of Buckingham (6 miles) are close by, and the nearest large towns are Northampton and Milton Keynes.
Relevant evidence: No