They had me do a 4-hour digital interview where I answered three coding questions and they filmed me responding to personal questions. After I completed the interview, I received an email stating that I would be contacted by an IBM representative, but I never was.

Given an input of employee names and their managers (e.g., John reports to Mary), create a way to search for the closest common manager given two employees who are having a conflict.

Given a paragraph of sentences, output the sentence that contains all other sentences. Ignore case and characters that are not letters.