Task: Text Categorization
Input (English): Gerrid Rietveld and J. J. P. Oud were the best known architects of this movement. One of the founders said, "The square is to us as the cross was to the early Christians. "  In 1917 a namesake journal was published to explain the group's art, which was centered in Amsterdam. Although Theo Van Doesburg began using green and diagonal lines in 1925, the original focus was on horizontal and vertical lines and primary colors. FTP, name the movement that included Piet Mondrian.
Output (English): Fine Arts