Question: Did Jeremy Irons master sweep picking as a child?, Answer:No, Description of Jeremy Irons: English actor, Fact1: Jeremy Irons was the drummer and harmonica player in a four-man school band called the Four Pillars of Wisdom., Fact2: Sweep picking is a guitar playing technique.
Step1: What kind of musical instrument involves sweet picking?, Step2: What musical instruments did Jeremy Irons play in the school band Four Pillars of Wisdom?, Step3: Is #1 included in #2?, Wikipedia page for step 1: https://en.wikipedia.org/wiki/Sweep_picking, Wikipedia page for step 2: https://en.wikipedia.org/wiki/Jeremy_Irons, Wikipedia page for step 3: , not_definitive_answer: False, incorrect_answer: False