CREATE TABLE table_31426 ("Prefix class" TEXT, "Type and usage" TEXT, "Example" TEXT, "Equivalent" TEXT, "Reference" TEXT)

What is every prefix class for the equivalent of NTE101?
SELECT "Prefix class" FROM table_31426 WHERE "Equivalent" = 'NTE101'
SELECT "Prefix class" FROM "table_31426" WHERE "Equivalent" = 'NTE101'