xsd:string A Path made up of a set of positions in some N-space Domain (often spatial) is determined as a function of a Base_position and some one-dimensional Independent_variable (often time). For many of the words of this frame, the Domain and/or the Independent_variable are incorporated in the basic definition of the target. East of Mt. Diablo the Sierras rise majestically above the Central Valley. In this case, the Domain and the Independent_variable are both spatial.