Consider the premise. Does the hypothesis naturally and logically follow? Premise: once in a blue moon , listed under moon in L ) may be listed elsewhere (under blue moon in W). Hypothesis: The phrase "once in a blue moon" may be listed in the F column.
once in a blue moon , listed under moon in L ) may be listed elsewhere (under blue moon in W).###The phrase "once in a blue moon" may be listed in the F column.