Title: Time.
Question: Who showed, in his thought experiments, that people travelling at different speeds measured time differently?

Title: Turner Classic Movies.
Question: What company owns TCM and Warner Bros.?

Title: Kanye West.
Question: What decade of music inspired Kanye West after his tour with U2?

Title: Umayyad Caliphate.
Question:
Who was the father of Yazid ibn Abi Sufyan?