1) When a person or organization is providing information, this form is used: At the outset let me make it clear that I describe research - Evaluating mobility aids for the blind. 2) When referring to a document, this form is more common. Thirteenth- and fourteenth-century records, moreover, make clear that the piers were of stone at that time ... More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.