“How can I get the one sentence descriptions of Wikipedia pages?” After some “Inspect element”, “View Source”, and googling, found a Google sheets add-on (with a dead home page) that can pull phrases in – but they’re on Wikidata, not Wikipedia, so I had to pull in their codename for the pages.
=WIKIDATASEARCH(A1)
=WIKIDATADESCRIPTIONS(B1)
Done 
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