premise: Reperi was an ancient Roman Town of Roman North Africa, in the Roman province of Mauritania Cesariense. The exact location of the ancient town is now unknown, but is surmised to have been in Northern Algeria. The town seems to have last till the Muslim conquest of the Maghreb.
hypothesis: Reperi was an ancient Roman Town in Northern Algeria. 
reason: The computer thought it was correct because I used a lot of the same words as in the context, but it is neither correct nor incorrect because the exact location of this town in unknown. 