 
 <prompt> Wetin be the Great Vowel Shift of English? Based on di last question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: This change dey interesting from sociolinguistic point of view because e be like say e happen recently, for 1970s, and na older well-educated women from upper middle classes start am. The lowering of the diphthongs don dey happen for many Dutch dialects, and e dey similar to English Great Vowel Shift, and the diphthongisation of long high vowels for Modern High German, wey don happen centuries ago reach the state wey we dey see for Polder Dutch now. Stroop dey reason say the lowering of open-mid to open diphthongs na phonetically "natural" and inevitable development and say Dutch, after e don diphthongise the long high vowels like German and English, "suppose" don lower the diphthongs like German and English too. 