CREATE TABLE table_56695 ("PRR Class" TEXT, "Builderpars_m_singles Model" TEXT, "Build date" TEXT, "Total produced" FLOAT, "Wheel arrangement" TEXT, "Service" TEXT, "Power output" TEXT)

What is the wheel arrangement of cf-16-4, and 16 produced?
SELECT "Wheel arrangement" FROM table_56695 WHERE "Builder\u2019s Model" = 'cf-16-4' AND "Total produced" = '16'
SELECT "Wheel arrangement" FROM "table_56695" WHERE "Builder\u2019s Model" = 'cf-16-4' AND "Total produced" = '16'