Which Model has a Number of CPUs of 1–10, and a Performance (MIPS) of 49–447?
CREATE TABLE "s_390_computers" (
  "model" text,
  "year_introduced" real,
  "number_of_cp_us" text,
  "performance_mips" text,
  "memory_gb" text
);
SELECT "model" FROM "s_390_computers" WHERE "number_of_cp_us"='1–10' AND "performance_mips"='49–447';