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Let’s say you’re curious to find out the population of the city you live in. Go to Google and ask it “population of philadelphia, pa.” Ha! We’re too smart for Google. It tries to answer the question but comes up with “Pennsylvania – Population: 12,281,054 ; 6th, 12/00.” That’s not what we were looking for. Now, Google understood the question. We can tell because it gave us a special answer. But it couldn’t come up with the right answer because it can’t reliably understand the pages containing answers. We can’t blame Google for that, really.

Hold that thought for a while. At the end of this article I’ll demonstrate a simple Python program using the Semantic Web that can answer questions about population and more. First, though, we need to find some population statistics.

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