Complex sentence: It is at the core of the World Agricultural Information Centre (WAICENT) through which access is given to FAO's vast store of information on agricultural and food topics--statistical data, documents, books, images, and maps.
Split into simpler sentences: It is at the core of the World Agricultural Information Centre (WAICENT). WAICENT gives access to FAO's vast store of information on agricultural and food topics--statistical data, documents, books, images, and maps.