5. The method of claim 1 , further comprising: displaying, for a most frequently looked up one of displayed words of the scrollable list, a plurality of sentences including the most frequently looked up one of the displayed words, the plurality of sentences being obtained from a plurality of media sources, and being displayed in reverse chronological order with respect to at least one of a date and a time associated by the media sources with the sentences.
6. The method of claim 5 , wherein the sentences obtained from the media sources are included in dated articles of the media sources, the chronological order being based on the dates of the articles.