What was the question for this implicit rationale, and corresponding answer?
The relevant information is: Columbo's first name has never officially been identified, although the name "Frank Columbo" has been visible on pieces of identification throughout the show's history.
 The answer: Columbo 's first name has never officially been identified , although the name `` Frank Columbo '' has been visible on pieces of identification throughout the show 's history
The question: Columbo or Lieutenant Columbo is the eponymous main character in the successful detective crime drama series Columbo. He is portrayed primarily by Peter Falk, who appeared in the role from 1968 through 2003. Columbo's first name has never officially been identified, although the name "Frank Columbo" has been visible on pieces of identification throughout the show's history.

Answer this question: what was columbo's first name in the series?