Take the following as truth: The old-established Caveau de la Huchette (rue de la Huchette in St-Germain-des-Pres) opens every night at 9:30pm for listening and dancing to a small combo or big band swing or bebop.
Then the following statement: "Amateur dancers come to this place usually at 10:00 pm, and they dance till the closing time." is true, false, or inconclusive?
Answer: Inconclusive