Historical clue formulations

• Pilot follower, maybe — 2019-01-06
• 1999 prequel that grossed over a billion dollars, familiarly — 2017-10-20
• Series opener — 2017-03-31
• "The Phantom Menace" in the "Star Wars" series — 2015-07-26
• Series starter — 2014-03-22
• "The Phantom Menace," in the "Star Wars" series — 2012-05-29
• Series kickoff — 2009-02-13
• Series opener — 2007-05-12
• 1999 "Star Wars" release — 2007-03-18
• 1999 "Star Wars" release — 2002-09-20