Take the following as truth: He'd had a series of victories in various types of powered vehicles, including a victory on land at Daytona Beach in Florida, before coming to Coniston in 1967 to attempt to break the world record in speed boating.
Then the following statement: "He attempted to break the speed boating world record in 1967 but failed." is true, false, or inconclusive?
Answer: Inconclusive