What is the difference in the protected period between CEO and Other Executives?
{"CEO": {"Protected Period": 2.0, "Multiple of Annual Cash Compensation": 3.0, "Years of Welfare Benefits": 3.0}, "Other Executives": {"Protected Period": 1.5, "Multiple of Annual Cash Compensation": 2.0, "Years of Welfare Benefits": 2.0}, "Other Officers": {"Protected Period": 1.0, "Multiple of Annual Cash Compensation": 1.0, "Years of Welfare Benefits": 1.0}}
ceo_protected_period = df["CEO"]["Protected Period"]
other_executives_protected_period = df["Other Executives"]["Protected Period"]
answer = ceo_protected_period - other_executives_protected_period