I've noticed that in Google results, Wikipedia articles sometimes get summaries that aren't the page content but are descriptions of it. For instance, when I search Google for "Australia", the Wikipedia article (which is at #2 in the results) has this:
"Hyperlinked encyclopedia article covers the country's history, government and politics, geography, economy, demographics, language and culture."
Has Google put these summaries into place itself, or is it something we've done on our end?
~Mark Ryan