Assertion: region's area | /r/HasProperty | centered around phoenix
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Source sentences:
text: The largest metropolitan areas are centered around Phoenix (with an estimated population of more than 4.7 million as of 2017 ), Las Vegas (more than 2.2 million), Tucson (more than 1 million), Albuquerque (more than 900,000), and El Paso (more than 840,000).