Question:  Developing Unconventional Gas (DUG) is a series of annual regional conferences of the oil industry, which notable key note speaker, was born on May 22, 1928?
Sentence (from "Developing Unconventional Gas"): Several notable key note speakers have visited DUG conferences including Leon Panetta at Pittsburgh's in 2014, T. Boone Pickens in 2011 and George W. Bush in 2013.
Relevant evidence: No