Take the following as truth: I have seen a calendar (Workman Publishing Co., New York) which defined it as  personal magnetism and charm,  and said,  Given today's extensive TV coverage, political candidates need duende if they hope to be accepted by the public. 
Then the following statement: "This calendar was the only one of its kind, for an obvious reason." is true, false, or inconclusive?
Answer: Inconclusive