We need to extract data and pictures from Wikipedia using the MediaWiki API to use them in our site. The articles to be extracted have to meet the following criteria: 1.- They must have an abstract (i.e. a short definition that appears at the beginning of the article, usually before the list of contents). Using the MediaWiki API, the abstract is found under rvsection=0 (which also includes other data) 2.- That abstract has to have an extension between 100 and 140 characters, including...