Namibia extends from 17S to 25S: climatically the range of the sub-Tropical High Pressure Belt, arid is the overall climate description descending from the Sub-Humid (mean rain above 500 mm) through Semi-Arid between 300 and 500 mm (embracing most of the waterless Kalahari) and Arid from 150 to 300 mm (these three regions are inland from the western escarpment) to the Hyper-Arid coastal plain with less than a 100 mm mean. Temperature maxima are limited by the overall elevation of the entire region: only in the far south, Warmbad for instance, are mid-40 C maxima recorded.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is the arid measurement in Namibia?
Ah, so.. 150 to 300 mm

Miami (/mami/; Spanish pronunciation: [maiami]) is a city located on the Atlantic coast in southeastern Florida and the seat of Miami-Dade County. The 44th-most populated city proper in the United States, with a population of 430,332, it is the principal, central, and most populous city of the Miami metropolitan area, and the second most populous metropolis in the Southeastern United States after Washington, D.C. According to the U.S. Census Bureau, Miami's metro area is the eighth-most populous and fourth-largest urban area in the United States, with a population of around 5.5 million.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Where does Miami rank among American cities by population?
Ah, so.. 44th

The Somali Postal Service (Somali Post) is the national postal service of the Federal Government of Somalia. It is part of the Ministry of Information, Posts and Telecommunication.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who runs the Ministry of Information?
Ah, so..
unanswerable