Sentence:  To encourage exploration for domestic sources of minerals , the Office of Minerals Exploration ( OME ) of the <WSD>U.S.</WSD> Department of the Interior offers financial assistance to firms and individuals who desire to explore their properties or claims for 1 or more of the 32 mineral commodities listed in the OME regulations . 
Meaning of the word marked with <WSD> tags:  any number of entities (members) considered as a unit