 
 <prompt> Wetin go happun wen two pipo dey speak different dialects instead of languages? Given di previous question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```The most common, and most purely linguistic, criterion na say if two varieties fit understand each other well well, then dem be dialects of the same language; if dem no fit understand each other, then dem be different languages. But sometimes e fit dey hard to decide if two dialects dey the same language or not, especially if dem dey form one kain continuum wey make dialect B fit understand both dialect A and dialect C but dialects A and C no fit understand each other. Sometimes too, e fit happen say person wey dey speak dialect X fit understand person wey dey speak dialect Y, but the person wey dey speak dialect Y no fit understand the person wey dey speak dialect X; for this kind situation, the mutual intelligibility criterion no fit work well.``` 