I really like this. I am into SPARQL so I prefer the WikiData SPARQL endpoint, but for most developers this looks like a good query tool.
If you ever tried to scrape HTML, you know how untidy it usually ends up; this one looks clean.
I am mentioning Wikidata/SPARQL in README (TL;DR: less data still, harder to discover unless you are deeply into SemWeb tech), but I expect this project, will it live long (fingers crossed) will definitely has some relations with Wikidata, too. My previous attempt on something similar: https://github.com/molybdenum-99/reality — used both Wikipedia and Wikidata (and OpenStreetMap and...) but however cool were few demos I managed too achieve, it was a dead end for several reasons.