sentences:  The Whitney focuses on 20th- and 21st-century American art.Its permanent collection, spanning the late-19th century to the present, comprises more than 25,000 paintings, sculptures, drawings, prints, photographs, films, videos, and artifacts of new media by more than 3,500 artists.It places particular emphasis on exhibiting the work of living artists as well as maintaining an extensive permanent collection of important pieces from the first half of the last century.