xsd:string The speaker believes that some state of affairs or entity (the Requirement) must be present in order to cause some other dependent state of affairs to occur (the Dependent). In the typical case, the Cognizer desires the occurrence of the Dependent and so also desires the obtainment or occurrence of the Requirement. I need one more bolt. DNI I need one more nail to finish building the cabinet. In order to complete the treaty, the United States will require several more diplomats. He needs everyone to leave his office to finish his work.