 
 <prompt> "Which one happen first, Stonehenge or the megaliths for Nabta Playa? Based on di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context:" <response>: During di Neolithic Era, before desertification start, around 9500 BCE di central Sudan bin dey rich well well dey support plenty people wey dey move from wetin be desert now, like Wadi el-Qa'ab. By di 5th millennium BCE, di people wey dey live for wetin dem dey call Nubia, dey fully involved for di "agricultural revolution", dey live settled life with plants and animals wey dem don domesticate. Saharan rock art of cattle and herdsmen dey show say dem get cattle cult like wetin dey Sudan and other pastoral societies for Africa today. Megaliths wey dem see for Nabta Playa na clear example of probably di world's first known archaeoastronomy devices, wey happen before Stonehenge by about 2,000 years. Dis complexity, as dem see for Nabta Playa, and as e dey show for different levels of authority within di society there, likely form di basis for di structure of both di Neolithic society for Nabta and di Old Kingdom of Egypt. 