List all FTE middle school teachers in Sunnyvale.
CREATE TABLE "schools" (
  "school_name" text,
  "city" text,
  "students" real,
  "fte_teachers" text,
  "pupil_teacher_ratio" text,
  "school_level" text,
  "low_grade" text,
  "high_grade" text
);
SELECT "fte_teachers" FROM "schools" WHERE "school_level"='Middle' AND "city"='Sunnyvale';